Kimi Raikkonen has refused to rule out replacing injured Robert Kubica in Renault.
After having launched his own team in world rally as Ice1 in 2011, 2007 world champion is already in Sweden for the opening of the season.
Meanwhile, negotiations with Renault broke down midway through season have changed appearance, taking the head of team Renault Eric Boullier dismissing recent rumors about Raikkonen, deeming them as "pure speculation".
"We have spoken with Kimi last year", said Auto motor und Sport. "He told us that he prefers to stay at the rally." "So now it does not consider thereafter."
Nick Heidfeld is trying to deal with Renault seat in Jerez test this week with Boullier naming Pedro de la Rosa and Vitantonio Liuzzi other potential candidates.
But when asked if they are ready to give a "spark" in F1 with a return to F1 in the short term, Raikkonen told Finnish broadcaster MTV3: "That's hard to say."