Defender William Gallas has told Chelsea he wants to leave the club.
Gallas won back-to-back Premiership titles with Chelsea
The Frenchman, 28, moved to Stamford Bridge from Marseille for £6m in 2001 and has proved a stalwart in their back-to-back Premiership titles.
Now Gallas, who claims AC Milan want to sign him, has said: "My decision has been taken and is definitive: I want to leave Chelsea.
"I want another challenge. I've been with Chelsea for five years. I want to experience another league."
Speaking to L'Equipe, Gallas suggested the San Siro was his most likely destination.
"The directors of Milan are interested in me, and I am interested in the idea of going to play over there.
Gallas said his request was "not a question of money" amid reports that he has been unhappy playing at full-back, away from his preferred role at centre-back.
Earlier this month Gallas had given a pointer to the way he was feeling.
"I have been here five years and maybe that's enough. I am a man who wants to win everything and I want to do that in different countries," Gallas said.
The Frenchman, who has made more than 200 appearances for Chelsea in his five years at the club, has one year left on his Stamford Bridge contract.