Surely he just plays out his contract and finds a new club in the summer? What purpose is there in going on the transfer list?
Perhaps he feels betrayed by the club he feels he has given very good service to, and is making a point that he really is unhappy staying at the club any longer, and thus is looking for a loan to then be converted into a permanent move?
I personally reckon he was told "one year, or nothing" and chose nothing.