Transfers
| Date | From | To | Type |
|---|---|---|---|
| 08.01.2020 | Celtic | — | — |
| 07.08.2016 | Aston Villa | Celtic | € 4.1M |
| 01.07.2015 | Manchester City | Aston Villa | € 3.5M |
| 30.01.2015 | Manchester City | Aston Villa | Loan |
| 01.07.2014 | — | Manchester City | — |
| 22.08.2013 | Manchester City | — | Loan |
| 31.08.2012 | — | Manchester City | € 7.8M |
| 09.08.2010 | Chelsea | — | € 600K |
| 06.08.2009 | Chelsea | — | Loan |
| 06.01.2009 | Chelsea | — | Loan |
| 28.02.2008 | Chelsea | — | Loan |
| 06.11.2007 | Chelsea | — | Loan |
| 01.07.2005 | — | Chelsea | € 500K |