Money could be at the heart of the delay in Lewis Hamilton’s re-signing with the McLaren team.

Until now, the British team has indicated it wants the 2008 world champion to stay on board, while 27-year-old Hamilton insists he has no plans to leave and will turn his attention to the 2013 contract soon.

But according to Blick newspaper, McLaren is pushing to cut Hamilton’s existing contract retainer “in half” to “about EUR 10 million”.

The Swiss report said the driver is unimpressed with the negotiations so far, but at least Hamilton’s mood has improved tenfold compared with his calamitous 2011.

It is a full year since Hamilton raged about his “frickin ridiculous” track rivals in the 2011 Monaco grand prix, when he also half-seriously suggested that the stewards were targeting him “because I’m black”.

He is back on top form this season, but still yet to win a race, arguably mainly due to McLaren’s numerous team mistakes.

Reports have suggested boss Martin Whitmarsh, who insists Hamilton “deserves” to win this weekend in Monaco, is worried the mistakes might drive the highly rated racer away.

On Wednesday, however, Hamilton denied he is frustrated.

“I’m not, no. This is the way racing goes sometimes,” he insisted.

“I could easily get frustrated because I could have a healthy lead in the championship — but that’s not the case.

“I don’t want to speak too early but something has definitely changed. Whatever I’m doing is working,” he told British reporters.

“In life, things just seem a lot better and that’s enabling me to get on with my job without having any baggage.”

Sergio Perez has ruled out switching to Ferrari this season to replace Felipe Massa.

It is suggested the famous Italian team is growing increasingly impatient with struggling Brazilian Massa’s poor form.

“I think all this hype about a possible switch is massively blown up by the media,” Perez told F1′s official website.

“Should that situation really come about I would reject it as I would not want to make a switch in the middle of a season.”

Nonetheless, 22-year-old Perez is the obvious favourite, as the cream of Ferrari’s driver development programme and already powered by the Maranello team’s engines at Sauber.

“I think that people should not mix up engines and drivers,” he insisted.

The denials, however, are unlikely to dampen the rumours, with Massa under increasing pressure to perform — and some saying Monaco could be his last chance.

“I hope this weekend is where one can consider that my 2012 championship will begin,” the Brazilian said on Wednesday.

“I have had a few difficult times in my career and maybe the start to this season has been the most difficult so far.

“I have had to deal with the technical side of the problem, but also it causes a mental side, as it is not easy to deal with this situation. But if you fix one, then it is easier to fix the other,” added Massa in Monaco.

Perez tipped him to bounce back.

“He (Massa) is a strong driver and he has a great team behind him. Once he’s bounced back all these stories will die at once,” he said.

Paul di Resta has hinted he would leap at the chance to replace Michael Schumacher at Mercedes.

The German marque’s Brackley based chief executive Nick Fry this week earmarked impressive Force India driver di Resta, earlier a Mercedes protege, as an ideal successor should Schumacher not stay beyond his 2012 contract.

Asked about Fry’s comments and the media speculation on Wednesday, di Resta said in Monaco: “It’s always nice to have the press interest and people looking out for you, but I need to stay focused on doing the best job I possibly can.”

He told Sky Sports News: “It’s no secret that I want to be a race winner and world champion — and to do that, I need to be in a great car.”

Sergio Perez admitted to mixed feelings on Wednesday as he returned to Monaco.

The last time he was in the Principality to race – for his debut grand prix in the fabled Principality – he was hauled away in an ambulance, having been knocked unconscious in a huge qualifying crash.

“To me it’s unbelievable to be back here after such an accident,” the 22-year-old said on Wednesday, according to Germany’s Auto Motor und Sport.

Mexican Perez said Monaco is still his favourite track.

“It is definitely not a good feeling that the walls are so close, but we know the risks. It’s a special place.

“I can remember everything right up to the crash. The next thing I know was that I was on the way to hospital — I was unconscious for several minutes.

“After such an accident it is not easy to come back — I cannot say for sure how I will feel when I come out of the tunnel for the first time. But I think it will be completely out of my head.”

Perez said he really needed “four or five” races to recover from the heavy concussion, but that there was pressure from sponsors to come back as soon as possible.

“I wanted to get back into the car in Montreal, but it was impossible,” he recalled.

“In Valencia it was very difficult for me.”

Now, he is hoping for a very different Monaco weekend, after looking strong last year until his crash.

“Our goal must be the podium. I hope to find a good setup although we have recently had a little problem with the traction.

“We are so close to the top that every tenth can make a difference.

“After our second place in Malaysia, maybe the next step will be victory — I don’t know if we will succeed. But the opportunities are there,” said Perez.

Ross Brawn revealed on Wednesday he missed the recent Spanish grand prix to have checks on his heart.

After handing over to his Mercedes deputy Nick Fry in Barcelona, fellow Briton Brawn is back in action as the team boss in Monte Carlo.

Rumours hinted there was more to the story, but Brawn insisted to a German newspaper earlier on Wednesday that he was simply advised by doctors to take the weekend off after a night in hospital for checks.

He then told reporters in Monaco his symptoms had been “arrhythmia”, or an irregular heartbeat, insisting he is “back to normal now”.

Brawn, 57, joked the heart problem was triggered by watching an exciting football game on television.

It is believed static electricity could have sparked Williams’ garage fire two weeks ago in Barcelona.

Even in the Monte Carlo paddock, the huge Spanish blaze was still a hot topic.

The British team and the FIA conducted investigations, but there has been no definite finding about the cause of the fire.

Germany’s Auto Motor und Sport reported suggestions simple static electricity, caused by the specific weather conditions and the fact a container was not grounded at the time, was the culprit.

Williams has scrambled to be ready for Monaco, but the only obvious sign of the fire on Wednesday was one missing mechanic, who is still recovering from burns.

“He’s on the road to recovery,” said co-owner Toto Wolff.

It is believed the mechanic was pumping fuel from one container to another when the fire started.

Wolff confirmed the static electricity theory.

“This is extremely rare. The weather may have played a role, as we had low pressure over Barcelona that day,” he explained.

Auto Motor und Sport said Williams lost mainly computers in the fire, but the crucial data survived. Of the team’s 150 radios, only 40 were intact.

Wolff said Bruno Senna’s chassis survived because of the partitions at the back of the main pit area.

“They are flame retardant,” he confirmed. “This meant the fire did not come beyond the back (area). The walls melted in the heat, but they didn’t burn.”

And financially, the Oxfordshire based team is completely undamaged, due to insurance.

McLaren has made changes to its pit crew and processes, following recurring problems at recent grands prix.

Team boss Martin Whitmarsh launched a full internal investigation after Bahrain, where problems with the fitting of wheels during crucial stops resurfaced.

“We have to try and make sure we pick up on them (the problems) for the next race because we can’t afford to lose points like we did,” said Lewis Hamilton.

One wheel-gun operator got the lion’s share of the blame, but Whitmarsh insisted that McLaren would also “look at the equipment, the process, the approach”.

He told reporters on Wednesday: “We have looked at what we are doing and have made some changes to the team and the process and we’ll see them on Sunday in Barcelona.”

Despite the heat felt by the deposed wheel-gun operator, Whitmarsh reveals he was “astounded” by the number of McLaren mechanics who put their hands up to replace him.

“It reflects well on the spirit of the team. There’s been a reasonable amount of practice and we’ll see at the weekend. I believe we’ll have good stops,” he concluded.

McLaren looks set to run a higher nose this weekend in Spain.

Last week, at the very end of the Mugello test, test driver Oliver Turvey debuted a new front wing that featured a conspicuously higher nose tip.

McLaren, the early 2012 frontrunner but having struggled recently in Bahrain, was the only notable team this year to ignore the new design trend for ugly ‘stepped’ front noses, introduced as arguably the best solution to new nose-height safety regulations.

The MP4-27′s new nose does not feature a step element, but the tip is notably higher than its predecessor.

“Nowadays it is quite a critical part of the car, you’re looking to find very small improvements,” team boss Martin Whitmarsh said on Wednesday.

As for whether the new nose will be seen in Barcelona, he confirmed: “You may well see it again, yes.

“There’s a reasonable chance you’ll see it on Sunday.”

The French government is dashing to seal the lid on the country’s return to F1.

Bernie Ecclestone has said a deal has been reached to annually alternate a race between Paul Ricard in France and Belgium’s fabled Spa-Francorchamps.

But the final signature and official announcement are still missing.

David Douillet, the French sports minister, told Le Journal du Dimanche that the chance France will be on the 2013 calendar is “90 per cent”.

“The contract is going back and forth between the lawyers. I hope I get to London to meet with Bernie Ecclestone between Wednesday and Friday,” he added.

The newspaper said Douillet is dashing to complete the deal by this weekend’s presidential election, because socialist frontrunner Francois Hollande has hinted the grand prix project would be reviewed if he is elected.

Douillet admitted that it is “very likely” Hollande would “bury” the race.

Le JDD newspaper said organisers and Ecclestone have agreed the race sanctioning fee, EUR 22 million, which is still a few million short of guaranteeing a balanced budget.

And “without a balanced budget, we do not sign,” he warned. “The state, which does not participate financially, is still the guarantor of any debt.”

There also remains an odd silence from the Belgian side, who have not confirmed that Spa is the circuit that will alternate with France.

Well-known Brazilian commentator Reginaldo Leme has defended Felipe Massa, amid the Ferrari driver’s career crisis.

Massa’s Ferrari seat hangs in the balance, and according to his boss Stefano Domenicali, he will have to improve in order to simply stay on the F1 grid with any team next year.

But Leme has pointed the finger of blame at Ferrari’s struggling F2012 car.

“It is very difficult to give an explanation for any driver’s bad phase,” Leme acknowledged on the Redacao Sportv programme.

“The car is very bad. The fact that Alonso is always scoring (points) just shows that the Spaniard is the best driver of this generation.

“No other driver, however good, could get anything out of that car.

“I think that’s what’s happening with Massa,” said Leme.

Massa will drive Ferrari’s heavily updated Barcelona-spec car at the Mugello test next Wednesday, while Alonso will drive on Tuesday and Thursday.

Turning his attention to the 2012 championship, meanwhile, Reginaldo Leme said consistency is more important than ever before, with four separate teams having won races so far.

“Look at Webber — he has been fourth four times and is third in the championship. Hamilton has been third three times and is right in contention.”

A support-race team and a respected journalist have become the next to pull out of this weekend’s highly controversial Bahrain grand prix.

The Porsche Supercup team MRS said its decision to skip the support race in the divided island Kingdom is the “first time in our history that we have had to cancel”.

“In the end we have the responsibility for our employees,” said team boss Karsten Molitor, citing security concerns.

Another withdrawal – joining the sacked Williams catering staff member, and the TV broadcasters Sky Deutschland, Fuji TV and MTV3 Finland – is the respected correspondent for O Estado de S.Paulo newspaper, Livio Oricchio.

“I have decided in agreement with Estado to not go,” he said. “We had the tickets for the entire season, except for Bahrain and the United States, because there was a doubt they would be run.

“Like many journalists, I will not be at Sakhir,” Oricchio admitted.

“I always believed that the race would not take place, and I’m still not 100 per cent sure that something will not happen that will lead the FIA or FOM to cancel.”

Indeed, following the sport’s decision to push ahead, the pressure on formula one to cancel at the eleventh hour has only intensified.

Nabeel Rajab, the leader of the government opposition group Bahrain Centre for Human Rights, admitted that the next protests – ‘three days of rage’, to coincide with the race’s three-day calendar – are aimed specifically at F1.

“We’re protesting to show anger at formula one for conducting the race here,” he is quoted by the BBC.

And the wife of a well-known jailed Bahraini activist who is on a long hunger strike, added: “I am not angry with the government… what makes me angry is people like Ecclestone who decide to come to Bahrain because he thinks everyone is happy.”

Italy’s La Stampa reports that F1 personnel have been advised to stay away from restaurants and shops, while “girlfriends and wives stay at home”.

That’s not entirely true, as Felipe Massa touched down at the airport on Thursday with his wife and baby son.

And Giedo van der Garde, the reserve driver for Caterham, said he has found Bahrain peaceful since his arrival on Wednesday.

“I’ve not been here long,” he is quoted by Auto Hebdo, “but everything seems quiet. Obviously, there’s a heavy police presence,” the Dutchman continued.

“But I haven’t seen any trouble or anything. Let’s hope it stays like that.”

Marco Canseco, the correspondent for the Spanish sports daily Marca, said he witnessed a “minor altercation” in the capital Manama on Wednesday.

“Then all the teams and everybody were able to get to the track for work without a hitch, the same on return,” he revealed.

Many are protesting the race going ahead on moral grounds, others due to security fears, whilst others fear for F1′s image.

“The ongoing debate about Bahrain is the only damage to the high gloss of the exciting 2012 season so far,” agreed Austria’s Kleine Zeitung newspaper.

A major golf tournament is set to go ahead in Bahrain.

The BBC is reporting on Wednesday that “a number” of formula one teams now fully expect next weekend’s Bahrain grand prix to be called off – with the final decision to be made this weekend in China – due to the security risk.

If that happens – despite Bahrain’s contract to 2016 – it could be the end of the grand prix forever, with rules stating that a cancellation for two years running will result in exclusion from the calendar.

It is interesting, therefore, that organisers of the inaugural Bahrain Invitational – a Pro-Celeb-Am golf competition – are reporting that the two-day event is definitely going ahead this weekend.

“We are looking forward to welcoming all the participants and safety around the event is assured,” said a spokesman.

Sir Jackie Stewart, a triple world champion in F1, backed the continuation of sports in Bahrain, admitting that if the grand prix is cancelled again “they may never get it back”.

“If this race is cancelled then I think it is a very backward position to have in sport,” he told the Herald Scotland.

“Sport is a positive force, it brings people together.”

Just two races into 2012, Kimi Raikkonen has already sat at the wheel of Lotus’ car for 2013.

His race engineer Mark Slade revealed that the Finn was at Enstone on Wednesday to sit in “a basic mock-up” of the single seater for next season.

“There’s some rethinking in terms of the driver position for 2013, and we wanted to test it out before committing any further to the concept,” said Slade.

“It may seem early, but it’s better to do these things sooner rather than later otherwise it can hold up the whole design process.”

A report by the Finnish broadcaster MTV3 said that Lotus’ 2012 car was essentially complete late last November, when Raikkonen joined the team.

So “Raikkonen can have his say on the car for next year”, the report added.

Just after backing his friend and countryman to bounce back, Rubens Barrichello has refused to rule out returning to formula one to replace the struggling Felipe Massa.

After 19 consecutive seasons in F1, 39-year-old Barrichello had to switch to the Indycar series for 2012 after losing his race seat at Williams.

Speaking to Brazilian television Sportv this week, however, the Brazilian said he cannot rule out returning to the grid — even with Ferrari.

After a six-year tenure, Barrichello left Ferrari at the end of 2005 and – until now – has not looked back overly fondly on his treatment alongside the famous Italian team’s former number one Michael Schumacher.

But in the wake of Massa’s recent performance struggles, Barrichello was voted in an Italian poll as the ideal replacement for the diminutive 30-year-old.

When asked about Ferrari, Barrichello said this week: “I want the fans to understand that I don’t have any hard feelings.

“If they called me today to go drive for them I would go. It was the best team I’ve ever driven for in terms of support, of creativity. But there were definitely some spicy episodes,” he added.

With the backing of sponsors, Barrichello has signed on with the KV team in Indycar for 2012, but he insists he is “completely open” about returning to F1.

“It would be something to think about,” he said in the televised interview on Wednesday.

“I think anything can happen. I’m not saying it will happen, but I have to be ready.”

Barrichello, the longest-serving driver in F1 history, revealed that he still enjoys the backing of Bernie Ecclestone, the sport’s influential chief executive.

“He asked me if I was really going to race in Indycar and I told him ‘Yeah, because you didn’t find me a place in F1′,” he joked.

“He said he will see what he can do about it. Really, you just have to see what happens, you have to stay open about it,” added Barrichello.

The FIA could sanction F1′s reigning back-to-back world champion for his behaviour during the recent Malaysian grand prix.

Before calling backmarker Narain Karthikeyan a “gherkin” and “idiot” in the wake of their collision, Sebastian Vettel was captured by his on-board camera twice displaying his middle-finger to the Indian driver.

“I think he’s highly frustrated because he’s having a tough season,” Karthikeyan told the Deccan Chronicle on Wednesday.

“It’s completely unprofessional to blame me for the incident. The derogatory remark only goes to show him in bad light.

“Just because he has a good car, he can’t call others an idiot,” Karthikeyan continued.

“I have won races in all the previous single-seater championships I have participated in so I don’t need a certificate from Vettel.”

Reports in Germany, including in the Kolner Express, Bild and Die Welt newspapers, claim that Red Bull driver’s behaviour may have breached the new stricter code of conduct introduced by FIA president Jean Todt.

The FIA has been contacted for comment.

“He has breached the code of conduct,” former F1 driver Marc Surer told Germany’s Sky television. “You sign it when you get the license and then you have to behave correspondingly.

“Any behaviour that hurts other people or the sport is an offense,” added the Swiss.

Asked what the penalties might be, Surer explained: “Anything from a warning to a license revocation. In this case I think it was quite understandable and there will be a mild punishment, if there is anything.”

Hans-Joachim Stuck, however, is slightly less forgiving.

“When you’re overtaking, misunderstandings can occur. I think Vettel needs to learn this.

“With him, the curve was always upwards and now it’s not the case, and he needs to deal with that,” the German legend told the DAPD news agency.

As for Vettel’s description of Karthikeyan as a “gherkin”, Stuck insisted: “It’s better than ‘asshole’.”

Vettel’s attack, however, was sustained, with Kleine Zeitung newspaper now quoting the Red Bull driver as having said: “Maybe formula one is not the place to learn how to drive.”

Stuck responded: “If Sebastian had left more space, it would not have happened. It happens sometimes so it’s a racing incident.

“He (Karthikeyan) didn’t do it on purpose and it always takes two.”

The HRT driver hit back by calling Vettel a “bully”, and even David Coulthard – a Red Bull team consultant – defended Karthikeyan.

“He can’t make his car invisible,” the Scot is quoted as saying by the Mirror.

Also defending Karthikeyan was Force India driver Nico Hulkenberg, who told the Indian press this week: “From what I saw, it was not Narain’s fault.

“So I don’t really understand why he (Vettel) said all that.”

Hukenberg’s Force India teammate Paul di Resta added: “Narain is entitled to do as much on the track in comparison with someone like Vettel.

“Both are F1 drivers and are there to represent their teams.”