After his latest headline-grabbing tangle outside a Liverpool nightclub, we look back at the turbulent 'career' of QPR midfielder Joey Barton, starting in July 2004: Barton causes a mass brawl while playing for  Manchester City against Doncaster Rovers, when he hacks down an opposition player. Manager Kevin Keegan says afterwards: "I told him the truth. You either play football or you come off. There is no choice".