8. Craig Bellamy
The Welsh forward has been garnering a bad reputation ever since his days with Newcastle, where he was accused of having a hand in Sir Bobby Robson’s dismissal. He then built on this by allegedly attacking Liverpool teammate John Arne Riise with a golf club. His blunt honesty has been appreciated by some, but has also known to rub people up the wrong way, and his retirement will come as welcome news for some.