Transfers
| Date | From | To | Type |
|---|---|---|---|
| 28.09.2020 | Fiorentina | Monza | — |
| 31.01.2020 | Fiorentina | Besiktas | Loan |
| 21.01.2019 | Sassuolo | Barcelona | Loan |
| 05.07.2018 | Eintracht Frankfurt | Sassuolo | Free |
| 18.08.2017 | Las Palmas | Eintracht Frankfurt | Free |
| 02.08.2016 | AC Milan | Las Palmas | Free |
| 30.08.2013 | AC Milan | FC Schalke 04 | € 12M |
| 01.07.2011 | Genoa | AC Milan | € 7.5M |
| 16.08.2010 | Genoa | AC Milan | Loan |
| 01.07.2010 | — | Genoa | € 6.5M |
| 01.09.2009 | Tottenham | — | € 4.5M |
| 01.07.2009 | Borussia Dortmund | Tottenham | — |
| 11.01.2009 | Tottenham | Borussia Dortmund | Loan |
| 01.08.2007 | Hertha BSC | Tottenham | € 7.9M |