Transfers
| Date | From | To | Type |
|---|---|---|---|
| 19.01.2021 | Ajax | FC Schalke 04 | Free |
| 01.07.2017 | FC Schalke 04 | Ajax | Free |
| 31.08.2010 | AC Milan | FC Schalke 04 | € 14M |
| 07.08.2009 | Real Madrid | AC Milan | € 15M |
| 01.01.2009 | Ajax | Real Madrid | € 27M |
| 01.01.2006 | Heerenveen | Ajax | € 9M |
| 01.08.2004 | PSV Eindhoven | Heerenveen | € 900K |
| 01.08.2003 | PSV Eindhoven | — | Loan |
| 01.01.2003 | PSV Eindhoven | — | Loan |