| From | Team | Fee | Apps | Goals | To | |
|---|---|---|---|---|---|---|
| 1994 | Paris Saint-Germain | - | 10 | 1 | 1997 | (Player) |
| 1997 | Arsenal | £500,000 | 65 | 23 | 1999 | (Player) |
| 1999 | Real Madrid | £23,000,000 | 19 | 2 | 2000 | (Player) |
| 2000 | Paris Saint-Germain | - | 39 | 10 | 2002 | (Player) |
| 2001 | Liverpool | Loan | 20 | 4 | 2002 | (On loan) |
| 2002 | Manchester City | £13,000,000 | 89 | 38 | 2005 | (Player) |
| 2005 | Fenerbahce SK | £7,000,000 | 39 | 14 | 2006 | (Player) |
| 2006 | Bolton Wanderers | £8,000,000 | 53 | 21 | 2008 | (Player) |
| 2008 | Chelsea | £15,000,000 | 125 | 38 | 2012 | (Player) |
| 2012 | - | - | 22 | 3 | 2013 | (Player) |
| 2013 | West Bromwich Albion | - | 12 | 2 | 2014 | (Player) |
| 2013 | Juventus | Loan | 2 | 0 | 2013 | (On loan) |
| 2014 | Mumbai City | - | 13 | 2 | 2015 | (Player) |