Speculation has been rife that Jenson Button would announce his retirement from F1 at the end of this season, after a dismal campaign with the McLaren team.
The team's new partnership with engine suppliers Honda has failed to bear fruit so far, with a noticeably underpowered engine also the cause of several reliability problems for both Button and teammate Fernando Alonso.
Last weekend's Singapore Grand Prix might have been the last straw for Button, in which the possibility of points was lost due to slow pitstops, a collision with Pastor Maldonado and finally gearbox issues.
The British driver has only gained 6 points from the 13 races so far, with a best finish of 8th at Monaco. In terms of championship standings he is only ahead of the three non-scoring Manor drivers.
Yet the 35 year-old remains a very popular personality amongst fans and the F1 paddock, most of whom would be sad to see him leave F1. Similar discussions were had only last year when McLaren struggled to decide whether to retain him or not, and the consensus seemed to be that the team had done a disservice to a great driver still hungry to race.
But any struggles he had in 2014 definitely weren't as bad as this year, and when asked about the recent rumours in Suzuka today, including a move to the World Endurance Championship, he cryptically replied "I'll be happy next year."
Should Button decide to move on, there are a couple of drivers most likely to replace him at McLaren:
Kevin Magnussen: The 22 year-old Dane was Button's teammate in 2014 and had highlights including 2nd in his first race in Australia and 5th in Russia, but otherwise Magnussen fought for the lower points behind the Briton. It'd be a shame if someone so young was stuck in testing duty for the rest of his time at McLaren, having already a year's racing experience in the cockpit (his last race was Australia this year, subbing for Alonso, and he didn't even start it!).
Stoffel Vandoorne: Magnussen's problem might be that McLaren already have another junior driver making a big impression in GP2. With top squad ART, the Belgian already finished 2nd in 2014 and so far in 2015 is crushing the competition, 108 points ahead of new Manor driver Alexander Rossi after 16 races, finishing outside the podium in only three of them.