Jean-Alain Boumsong insists he's staying at Juventus.

The French defender has been linked with Valencia and Besiktas, but says: "It's very simple, I refused moves because I want to stay with Juve. As far as I am concerned, they are the greatest club in the world and I have no reason to leave.

"When I made the choice to come to Turin with the team in Serie B last summer, I surprised everyone. Many friends and teammates asked how I, an international, could accept playing in the Italian second division. It wasn't a tough choice for me, I had no doubts.

"I don't know if [Claudio] Ranieri knows me well, but I am convinced one has to earn chances in life, especially when playing for Juve. So every day I'll try to prove my worth on the field and hope to extend my contract past the current 2010 expiry date."