I've just read Harry Rednaps autobiography and he sums it up perfectly. All managers get rid of bad apples. Unless they are worth a lot of money to the club. In essence if a player is not delivering or is a bad influence on the dressing room they get shipped out, if they're worth 20 million they don't.

Harry says he'd have sacked loads of players over the years but at times didn't because the chairmen wouldn't let him!!