Peterborough United defender Gabriel Zakuani has asked the club to place him on the transfer list.
Posh, who have been relegated to League One, recently offered the 26-year-old a new three-year contract, but he has decided that the time is right for him to leave London Road.
"I have spent five very happy years at Peterborough, but I am a very ambitious person and I want to play as high as I can in my career," he told the club's official website. "My international career is very important to me and it was a real honour to represent my country in the African Cup of Nations.
"I want to continue playing for my country and feel I have to give myself every chance of being selected by the national coach. I have always given 100% for the cause and this was a very difficult decision for me to make."
Zakuani originally joined Peterborough on a loan basis from Fulham in 2008, before signing a permanent deal in January 2009.
