Christopher Samba has submitted a transfer request at Blackburn Rovers.
Rovers boss Steve Kean insists they do not want to sell the defender.
But in a statement released by his management company, Samba said on Monday: "I have today officially requested a transfer from Blackburn Rovers Football Club.
"In my five years at Blackburn Rovers Football Club I have always given 100% in every game I have played. I have had several opportunities to leave but I have always stayed.
"I have decided now is the right time for me to pursue a new challenge and I have asked the club to respect my decision and allow me to leave.
"I thank the fans for their support and I hope they feel I have served them and their club well.""I have personally informed the owners, manager and executives at the club that I want to leave in this transfer window.