Transfers
| Date | From | To | Type |
|---|---|---|---|
| 30.10.2012 | Leeds | — | — |
| 08.09.2011 | — | Leeds | Free |
| 01.07.2005 | Chelsea | — | € 4.5M |
| 31.08.2003 | Chelsea | — | Loan |
| 01.01.2003 | Chelsea | Borussia Mönchengladbach | Loan |
| 01.08.2000 | Chelsea | Crystal Palace | Loan |
| 01.01.2000 | Chelsea | Crystal Palace | Loan |