| From | Team | Fee | Apps | Goals | To | |
|---|---|---|---|---|---|---|
| 2004 | Southampton | - | 15 | 4 | 2007 | (Player) |
| 2004 | Queens Park Rangers | Loan | 5 | 0 | 2005 | (On loan) |
| 2005 | Sheffield Wednesday | Loan | 2 | 1 | 2005 | (On loan) |
| 2006 | Sheffield Wednesday | Loan | 11 | 1 | 2006 | (On loan) |
| 2006 | AFC Bournemouth | Loan | 15 | 3 | 2006 | (On loan) |
| 2006 | Yeovil Town | Loan | 15 | 10 | 2007 | (On loan) |
| 2007 | Coventry City | £650,000 | 92 | 19 | 2010 | (Player) |
| 2010 | Newcastle United | - | 42 | 10 | 2012 | (Player) |
| 2012 | Blackburn Rovers | £3,000,000 | 14 | 2 | 2015 | (Player) |
| 2014 | Sheffield Wednesday | Loan | 15 | 4 | 2014 | (On loan) |
| 2014 | Derby County | Loan | 15 | 0 | 2015 | (On loan) |
| 2015 | Brighton & Hove Albion | Loan | 13 | 0 | 2015 | (On loan) |
| 2015 | Rotherham United | Free | 16 | 4 | 2016 | (Player) |
| 2016 | Ipswich Town | - | 11 | 0 | 2017 | (Player) |
| 2017 | Charlton Athletic | - | 5 | 0 | 2018 | (Player) |