| Youth career | |||
|---|---|---|---|
| –1992 | Federation Works | ||
| Senior career* | |||
| Years | Team | Apps | (Gls) |
| 1992–1993 | Iwuanyanwu Nationale | 25 | (15) |
| 1993–1996 | Ajax | 54 | (25) |
| 1996–1999 | Inter Milan | 12 | (1) |
| 1999–2004 | Arsenal | 119 | (30) |
| 2004–2006 | West Bromwich Albion | 53 | (7) |
| 2006–2012 | Portsmouth | 143 | (20) |
| Total | 406 | (98) | |
| International career | |||
| 1993 | Nigeria U17 | 6 | (5) |
| 1996 | Nigeria U23 | 6 | (3) |
| 1994–2011 | Nigeria[4] | 86 | (12) |
| *Club domestic league appearances and goals | |||