the response is the same. either he's mad or he's not. i don't think he will transfer though??? first you get a warning from the player and his work ethic will drop a little.... if you don't fix it you will get another message and his work ethic will drop a lot...
there are ways to manipulate his playing time to keep him happy but not use him in big game or late in the season, etc, but if i recall, the first warning will come after the 4th game.