Michael Schumacher has not ruled out standing in for injured Ferrari Formula One driver Felipe Massa although a comeback is highly unlikely, the retired champion's spokeswoman said on Tuesday.
The German's manager Willi Weber hinted that the former world champion could move to Toyota after Ferrari.
Schumacher said he would not want to extend his career beyond 2006 if he is not able to win races again.
Germany's Nico Hulkenberg will be Williams' official test driver next season.
Michael Schumacher's manager has accused Fernando Alonso of 'pitiful behaviour' after the Formula One world champion described the German ace as the least sporting driver of all time.
German publication Bild is claiming that Michael Schumacher will announce on Sunday that he is to retire at the end of the current season.
Team boss Flavio Briatore said there had been no discussions about the German driver's future.
"We've reached an agreement with (Renault) team chief Flavio Briatore on all major issues," said Ralf's manager.
Formula One champions Renault are interested in signing Ferrari's Michael Schumacher, his manager said.
The driver's manager Willi Weber announced the donation on a German television fundraising drive which raised over 34 million euros ($46.2 million) in pledges.
His manager Willi Weber also said the German driver was not going to McLaren.
If the German wins the title, he could then walk away and Massa would simply slot in alongside Raikkonen at Ferrari.
Paddock sentiment has started swinging towards the expectation that the German will continue for another year or two.
'I think you can assume that (the new contract will be signed),' the German said.
A summary of sports events and sports persons, who made news on Monday