Sebastian Vettel has insisted a poor 2014 season has not prompted him to leave Milton Keynes-based Red Bull.
The 27-year-old has won the last four drivers' championships whilst with Red Bull.
The current season has proved more challenging for Vettel, who is currently fifth in the drivers' standings going into this weekend's Japanese Grand Prix - 117 points adrift of leader Lewis Hamilton.
A second-placed finish in Singapore in the last grand prix is Vettel's best result of the year to date - he has only stood on the podium on two other occasions.
But, having previously won 38 races with Red Bull, Vettel has said his decision to leave is not down to a drop in performance.
Ferrari is almost certainly Vettel's destination as he looks set to replace two-time champion Fernando Alonso.