Kimi Raikkonen has insisted that he has not yet decided where he will be driving in Formula 1 next year.
"I have no contract for next year - that much is true. But further than that, I don't want to discuss the matter. I want to do well this season and everything else will fall into place," he told Formula 1's website.
"There are many things that are undecided and there is still a long way to go this season, so let's see how things unfold.
"We will see pretty significant changes when teams switch to their 2014 car development - and then it will be interesting to see what is going on."
Raikkonen currently lies second in this year's rankings after three races, three points behind Vettel.
He starts today's race in Bahrain from eighth place.