Caterham driver Heikki Kovalainen has refused to commit his future to the team.

Rumours have been flying around about the futures of a number of Formula 1 drivers, with the likes of Mark Webber, Sebastian Vettel and Lewis Hamilton all being linked with moves.

Kovalainen has received many plaudits for his performances so far this campaign and the Finn refused to rule out moving to a bigger team.

"I haven't spoken to any of the teams yet, not even to my team yet. All I know is my contract is finishing this year with my current team, but at the moment I am just worrying about getting the most out of what I have got," Kovalainen told Sky Sports News.

"Whatever happens, I think that will put me in the best position either with the current team or with some other team, but we aren't at that stage yet with myself or my management.

"We haven't looked at it seriously, I think it is a bit too early and there are a few guys ahead of me in the queue, things like what Lewis [Hamilton] will do or what Michael [Schumacher] will do, will probably have an impact on what everyone is doing."

Kovalainen has previously driven for both Renault and McLaren.