| From | Team | Fee | Apps | Goals | To | |
|---|---|---|---|---|---|---|
| 2002 | Grasshopper Club Zurich | - | 41 | 0 | 2004 | (Player) |
| 2004 | Tottenham Hotspur | - | 24 | 1 | 2007 | (Player) |
| 2005 | Hamburg SV | Loan | 8 | 0 | 2006 | (On loan) |
| 2006 | Wigan Athletic | Loan | 10 | 0 | 2006 | (On loan) |
| 2007 | Sampdoria | - | 127 | 4 | 2011 | (Player) |
| 2007 | Sampdoria | Loan | 15 | 1 | 2007 | (On loan) |
| 2011 | Juventus | - | 0 | 0 | 2013 | (Player) |
| 2011 | Fenerbahce SK | Loan | 38 | 1 | 2012 | (On loan) |
| 2012 | Lokomotiv Moscow | Loan | 6 | 0 | 2013 | (On loan) |
| 2013 | Sassuolo | - | 17 | 0 | 2014 | (Player) |
| 2013 | Fenerbahce SK | Loan | 16 | 0 | 2013 | (On loan) |
| 2015 | FC Sion | - | 72 | 12 | 2017 | (Player) |
| 2017 | Lucerne | - | 9 | 2 | 2018 | (Player) |
| 2018 | FC Dallas | - | 80 | 11 | 2021 | (Player) |
| 2021 | FC Lugano | - | 58 | 7 | 2023 | (Player) |
| 2023 | FC Sion | - | 62 | 9 | 2025 | (Player) |