| From | Team | Fee | Apps | Goals | To | |
|---|---|---|---|---|---|---|
| 1994 | Norwich City | - | 66 | 0 | 1998 | (Player) |
| 1998 | Charlton Athletic | £250,000 | 45 | 3 | 1999 | (Player) |
| 1999 | Leeds United | £4,000,000 | 101 | 3 | 2004 | (Player) |
| 2003 | Middlesbrough | Loan | 28 | 0 | 2004 | (On loan) |
| 2004 | Manchester City | Free | 51 | 1 | 2009 | (Player) |
| 2006 | Hull City | Loan | 9 | 0 | 2006 | (On loan) |
| 2007 | Charlton Athletic | Loan | 19 | 0 | 2007 | (On loan) |
| 2008 | Derby County | Loan | 2 | 0 | 2008 | (On loan) |