| From | Team | Fee | Apps | Goals | To | |
|---|---|---|---|---|---|---|
| 1998 | Auxerre | - | 128 | 70 | 2004 | (Player) |
| 2004 | Liverpool | £14,000,000 | 49 | 13 | 2007 | (Player) |
| 2006 | Olympique Marseille | Loan | 21 | 8 | 2007 | (On loan) |
| 2007 | Olympique Marseille | £6,000,000 | 37 | 16 | 2009 | (Player) |
| 2008 | Sunderland | Loan | 35 | 10 | 2009 | (On loan) |
| 2009 | Panathinaikos | £7,000,000 | 55 | 43 | 2011 | (Player) |
| 2011 | Lazio | £3,000,000 | 18 | 1 | 2012 | (Player) |
| 2012 | Queens Park Rangers | £4,000,000 | 26 | 9 | 2013 | (Player) |
| 2013 | Kuban Krasnodar | - | 15 | 4 | 2014 | (Player) |
| 2013 | Al-Gharafa | Loan | 2013 | (On loan) | ||
| 2014 | Bastia | - | 23 | 2 | 2015 | (Player) |