Button on possible F1 return: "I would definitely not rule anything out"

Button, who seemingly called time on his 17-season career in Abu Dhabi last November, will be back behind the wheel of a McLaren a week on Sunday when he replaces Fernando Alonso in a one-off appearance at the famous Monte Carlo race, while the Spaniard competes in the Indianapolis 500.

The 37-year-old Englishman may have relinquished his racing duties this season, but he remains under contract to McLaren for this season and 2018, too.

And with Alonso's future at McLaren hanging in the balance, Button has claimed he could be called upon by the British team to return next season.

"I can't rule it out," Button said. "I have a contract with the team to race next year so I would definitely not rule anything out."

Button also revealed that he was contacted earlier this year by two teams wanting him to race for them this season.

Mercedes and Williams were the only two outfits to confirm their line-ups in January following Nico Rosberg's sudden retirement and Valtteri Bottas's ensuing switch from Williams to join Lewis Hamilton at Formula One's world championship-winning team.

"I had so many options to race this year it is hilarious," added Button.

"That even went into this year with two different teams asking me to race. I have no interest in doing that.

"I am thinking of Monaco as my only race this year. Obviously if I am asked again at another point in the year I am here to fill that seat. But I am not going to go out of my way to ask to drive because the whole idea was not to."

Button won 15 grands prix during a career which climaxed in him winning the championship with Brawn GP in 2009. 

He competed in an Ironman in California on Saturday, winning his age group, and in doing so, securing his spot at the world championships in Tennessee later this year.

And Button's new life, far removed from the F1 paddock, naturally led to some suggestions that he had no interest in replacing Alonso in a McLaren which has been beset by Honda engine problems this season.

"Throwing this race at me is not a shock, and I am not thinking 's*** what am I doing and I don't want to do this'," Button said. "I am massively excited about it as I would not do it otherwise. I had the option to say 'no' because nobody wants someone in the car that doesn't want to be there.

"It is pretty mad really that I am getting back in a Formula One car, but there are no negative thoughts going through my head.

"It will be nice to get a good result, but I don't know what is going to happen. I don't know if I am going to jump in the car that it feels so different that I won't be competitive.

"I don't have anything to gain, but I don't have anything to lose either. I am there to help the team out and have some fun and it will probably be one of the most fun grands prix for me because there is no pressure. It is a one-off so I am really excited about the challenge."