Aldo Costa has ruled out a return to Ferrari return to Ferrari.
The Italian left the team in 2011, after being behind their last championship winning cars in 2007 and 2008.
Costa's Mercedes colleague Paddy Lowe has been linked with a move to Ferrari to replace his compatriot James Allison, but Costa himself has said he won't be returning any time soon.
Asked by Corriere della Sera newspaper if it is true that Ferrari has contacted him, Costa insisted: "Look, I prefer to respond in this way.
"I feel really good at Mercedes. This is my home and I have no temptation or hesitation," he added.
Bahrain International Circuit - Winter testing