He'll only really start to enjoy playing again when he finally realises the game doesn't owe him anything or think that he's having a tough deal from his manager / club.Nothing wrong with playing back in Holland or even perhaps Denmark. He might even be able to enjoy his football.
When he finally comes to the conclusion that it's up to him to show consistency in his performances, have a positive attitude and a willingness to put 100% effort into training then he might enjoy a brighter and more successful future than he has now.