Heikki Kovalainen claims Caterham is planning to use its current chassis as the basis for the 2013 car.
It is expected the salaried Finn will be pushed out of the team for 2013 by ’pay drivers’ Charles Pic and Giedo van der Garde.
Asked by the Finnish newspaper Turun Sanomat how he expects Caterham to go next season, Kovalainen said: "It’s hard to say.
"But when the team has decided to continue with the same chassis for the new car, it may not be a good sign," said the 31-year-old, who as Caterham’s lead driver has failed to score a single point since the team’s inception in 2010.