Ferrari will retain Felipe Massa next season in what is planned to be a stop-gap deal before the arrival of Sebastian Vettel in 2014.
Sources inside Ferrari say they have signed a contract with Vettel, which is thought to be an option to join in 2014 depending on their results.
The contract is likely to define a position Ferrari must occupy in the title race at a point in 2013.
Ferrari have decided to keep Massa as Fernando Alonso's team-mate until then.
