He made only five first team appearances in his time at Anfield and was loaned out to French side Ajaccio last January.
"I'm happy to be free to make my own decisions," said Diomede. "While I was at Auxerre and Liverpool I was unable to do that, but now I can talk to clubs directly.
"I may or may not stay with Ajaccio, but I want to remain in France. I accept that the chance to move to a big club has ended."
