Jenson Button has conceded that retirement from Formula 1 at the end of the season is a possibility.
Button, 34, has raced for McLaren since the start of 2010 but his contract expires at the end of the current campaign.
McLaren is currently evaluating its driver options for 2015, with Button in contention to retain his seat, alongside Danish youngster Kevin Magnussen.
But McLaren is reportedly still chasing Fernando Alonso and Sebastian Vettel as they attempt to lure one of them to drive for the team upon Honda's return as an engine supplier from 2015.
Button, who has only missed a handful of races since his debut in 2000, admits that retirement is a possibility.
"We haven't sat down and talked about it," he told BBC Sport.
"If I have to retire at the end of the season then so be it, but I feel I have so much more to give and I can't imagine life without motorsport and especially Formula 1."
McLaren CEO Ron Dennis says that he is while he is satisfied with the job being done by his current driver pairing, it is natural that the team will always seek the best duo available.
"I’m satisfied with both Jenson and Kevin," he told the Official F1 Website.
"They’re both capable of winning Grands Prix in a competitive car - Jenson has proved that 15 times in his long Formula One career, and Kevin has already demonstrated abundant pace in his so-far-short Formula One career - but clearly we’re not giving them a competitive car at the moment.
"Nonetheless, despite that, I want them to give their best - and, at the same time, be responsible enough to appreciate that McLaren will always make efforts to hire the best drivers available. If such opportunities arise, we’ll appraise them; we always have and we always will. All great Formula One teams are the same in that regard. But we’re not in a position to do that at the moment."