Keep offering to clubs, then fine him weeks wages etc... He should then become unhappy and yo then tell em that you will transfer list him if he doesnt stop moaning and eventually he leaves. I just keep fining his wages to make him unhappy it usually works
I have a better solution: Offer to clubs for his value; 30M. Look at interested parties, if someone offers great, offload him, if not then look at all interested parties' squads. Bid for a player you want e.g. I did it with T. Silva. Offer to exchange Tevez and pay nothing. ???. Profit.