Ferrari's test and technical manager Nigel Stepney said he was open to offers from rival teams after expressing unhappiness at recent management changes.
The first big row of the Formula One season is brewing already, with the opening race in Australia still six weeks away and the new cars barely out of their boxes.
Kimi Raikkonen drove Ferrari's 2007 car for the first time on Tuesday while his replacement at McLaren, double champion Fernando Alonso, set the pace in Formula One testing at Valencia.
Formula One tail-enders Super Aguri will unveil their 2007 car less than a week before the start of the new season in Australia on March 18.
Bahrain will host a Formula One grand prix until well into the next decade after announcing a long term contract extension on Monday, organisers said.
Renault rookie Heikki Kovalainen hopes to take Formula One by stealth this season, even as he steps into the shoes of double world champion Fernando Alonso.
Renault driver Giancarlo Fisichella said this season was surely his best chance yet of becoming Formula One world champion and he was determined not to waste the opportunity
Double world champion Fernando Alonso's move to McLaren has made Renault even more determined to retain their Formula One title, team boss Flavio Briatore said on Wednesday.
Formula One champions Renault set their sights on winning a third successive title, this time without Fernando Alonso, after unveiling their 2007 car on Wednesday.
Kimi Raikkonen will make his Ferrari debut in a test at Italy's Vallelunga circuit on Tuesday, the Formula One team said.