Lewis Hamilton says he has not spoken to Mercedes about signing a new contract as he prepares to launch his bid to equal Michael Schumacher's record of seven drivers' championship titles.
The British driver's $52-million)a-season deal expires at the end of the year and he has been linked with a move to Ferrari.
Reports in Italy say talks over a contract extension between Hamilton and Mercedes boss Toto Wolff have stalled.
But in a post to Instagram which he later deleted, Hamilton wrote: "Toto and I have not even spoken about contract yet. Nothing is being negotiated currently."
Both Ferrari and Red Bull have moved to tie Charles Leclerc and Max Verstappen respectively to long-term deals during Formula 1's off-season.
But Hamilton, who has spent much of the winter break in the United States, is unlikely to rush into a decision on his future.
Ferrari confirmed their interest in Hamilton last year, and will need a replacement for Sebastian Vettel in 2021 if the four-time world champion's deal is not renewed.
Hamilton, 35, can match Schumacher's record of seven titles if he wins the championship again this year.
He will get his first drive of the new Mercedes he hopes will fire him to further glory in the team's behind-closed-doors launch at Silverstone on February 14.
The first pre-season test gets under way in Barcelona five days later before Hamilton opens his title defence in Melbourne on March 15.