Bruno Senna has revealed that his deal to move into a race seat with Renault is currently for just the next two races due to legal issues regarding the decision to drop Nick Heidfeld.
The team announced on Wednesday that Senna was to drive at Spa with further information – which never arrived – being due on Thursday morning.
However, Senna and team-mate Vitaly Petrov were both present in Thursday's official FIA press conference, where Petrov let slip that the Brazilian was going to be in the car for the next two races.
Senna himself then confirmed the news but revealed that there are 'legal issues' to be resolved and that he hoped to be in a race seat for the remainder of the season.
Those legal issues are centred around Heidfeld's desire to retain his drive, with the German well aware of the limited options available elsewhere if he is to keep his F1 career on track.
According to former ITV-F1
commentator James Allen, Heidfeld is present in the Spa paddock and has spoken of a legal hearing in three weeks as he seeks to take back his drive.
The news that Senna is set to drive in the next two races could also add further fuel to the rumours that Romain Grosjean is being lined up to make a return to the grid for the first time since 2009.
Currently top of the GP2 standings, Grosjean would be free of his GP2 commitments following the Italian Grand Prix at Monza, which will also be the final weekend of the GP2 season.