Ferrari appear poised to imminently confirm Kimi Raikkonen's return after Felipe Massa used social media to announce his departure from their F1 team.
Massa, who has spent eight seasons with the Maranello marque, took to Twitter to state he would be leaving the team at the end of this season.
Massa said: "From 2014 I will no longer be driving for Ferrari."
Massa, who has made 184 starts for Ferrari - winning 11 races - since joining them in 2006 from Sauber, added: "I would like to thank the team for all the victories and incredible moments experienced together."
"Thank you also to my wife and all of my family, to my fans and all my sponsors.
"From each one of you I have always received a great support!
"Right now I want to push as hard as possible with Ferrari for the remaining 7 races.
"For next year, I want to find a team that can give me a competitive car to win many more races and challenge for the championship which remains my greatest objective!"