Button said he was confident the team would overcome its "current difficulties" to achieve great successes in the future.
World champion Nico Rosberg's retirement announcement on Friday came as a complete surprise even to the man who knows most of Formula One's best-kept secrets, commercial supremo Bernie Ecclestone.
Aggrieved McLaren boss Ron Dennis says Formula One teams must decide whether a driver is fit to race, rather than the governing body's doctors, after Fernando Alonso was barred from the Bahrain Grand Prix.
Danish Formula One driver Kevin Magnussen is leaving McLaren after being informed by email on his birthday that the team had no place for him.
Fernando Alonso made a troubled start to testing McLaren's new Formula One car
The Briton, the most experienced driver on the starting grid and 35 years old next January, will partner Spaniard Fernando Alonso in a lineup of champions.
Formula One's 'silly season' of rumour and speculation is heating up.
Lewis Hamilton, once the young sensation of Formula One, is starting to feel his age as a new generation of drivers sweeps into the sport and old hands like Jenson Button and Felipe Massa head for the exit.
Jenson Button hit back at Niki Lauda on Saturday after the Austrian Formula One great suggested the driver had told him he wanted to stay at McLaren next year and any uncertainty was about money.
Stefano Domenicali resigned as Ferrari's Formula One team principal on Monday, and the company's North America president and chief executive Marco Mattiacci was appointed as his replacement.
Sebastian Vettel looked forward to following in Michael Schumacher's Formula One footsteps after Ferrari confirmed on Thursday that the four times world champion would replace Fernando Alonso next season on a three-year deal.
The timing of the news immediately triggered speculation that Frenchman Eric Boullier could be heading to McLaren, who were due to launch their 2014 car later in the day in an online presentation.
Lewis Hamilton has competed with Alonso, Raikkonen, Button, Rosberg, Schumacher and Vettel, champions all of them, and he has come out on top.
McLaren will start the Formula One season without a title sponsor but still expect to have one this year, group chief executive Ron Dennis said.
McLaren's new Formula One car made a belated but encouraging test debut on Wednesday with Jenson Button hopeful the team was picking up speed on and off the track after a dismal 2013 season.
Niki Lauda expects departing Mercedes team principal Ross Brawn to return to Formula One in some capacity once he has gone fishing and taken time out.
Luca di Montezemolo's resignation as Ferrari chairman on Wednesday severs an historic link with the company's late founder Enzo and marks the end of an era for Formula One's most successful and glamorous team.
Fernando Alonso reiterated his long-term love and loyalty to Ferrari on Friday after McLaren, the Formula One team he left in acrimonious circumstances in 2007, said they would be keen to sign him.
Jenson Button is a wanted man, even if McLaren ultimately decide they do not want to retain the 2009 Formula One World Champion for next season.
Fernando Alonso indicated his Formula One future was in his own hands despite Red Bull announcing on Saturday that four time world champion Sebastian Vettel was leaving to join Ferrari.
Formula One has lost another of its principals.
Ferrari felt the pain on Sunday after emerging with just two points from a hard day in front of their home fans at the Italian Grand Prix.
Grand Prix greats come from all sorts of backgrounds but few started life with the odds stacked against them quite as heavily as Lewis Hamilton.