The future of Marussia driver Timo Glock is in doubt according to the German media.
Glock has been quoted as saying that he is leaving the team however no official announcement has been made.
Sport Bild revealed that Glock and Marussia had parted by mutual consent with the announcement expected as early as Monday.
Glock had a contract with the team until the end of the 2014 season and Marussia have not commented on the story.
Marussia recently signed British driver Max Chilton to race for the outfit in 2013 where he was expected to join Glock.