The 26 year old joined Bolton from Liverpool in 2005 and despite being an extremely controversial figure throughout the Premier League, he is a firm fan favourite at The Reebok.
The contender for Worlds most hated footballer, is not too bad when he's at the club you support, so don't worry Pompey fans, I know from his time at Anfield. After a while you can see past the spitting and diving and his scumbag nature and realise that he is a half decent player.
Diouf is likely to cost Harry Redknapp's side about £6 million.