Career as a coach
| Period | Team | Country | Position | |
|---|---|---|---|---|
| 07/2022 - 08/2022 |  | SV 19 Straelen |  Germany | Manager |
| 12/2016 - 02/2018 |  | Fortuna Sittard |  Netherlands | Manager |
| 07/2015 - 02/2016 |  | Nigeria |  Nigeria | Manager |
National teams managed
| Season | Team | Position | |
|---|---|---|---|
| Friendlies 2016 | | Nigeria | Manager |
| Africa Cup Qual. 2015/2016 | | Nigeria | Manager |
| Friendlies 2015 | | Nigeria | Manager |
| WC Qualifiers Africa 2015-2017 | | Nigeria | Manager |
Career as a player
| Period | Team | Country | Position | # | |
|---|---|---|---|---|---|
| 07/2005 - 01/2006 |  | KRC Genk |  Belgium | Midfield | 17 |
| 07/2004 - 06/2005 |  | Borussia Dortmund | Germany | Midfield | 16 |
| 12/2004 - 12/2004 |  | Borussia Dortmund II | Germany | Midfield | |
| 01/2003 - 03/2004 |  | VfL Bochum | Germany | Midfield | 4 |
| 07/2000 - 01/2003 | | Borussia Dortmund | Germany | Midfield | 15 |
| 07/1999 - 06/2000 |  | Juventus |  Italy | Midfield | 5 |
| 07/1997 - 06/1999 |  | AFC Ajax | Netherlands | Midfield | 15 |
| 07/1996 - 06/1997 |  | 1. FC Köln | Germany | Midfield | 15 |
| 07/1995 - 06/1996 | | 1. FC Köln | Germany | Midfield | 17 |
| 07/1994 - 06/1995 |  | AC Reggiana 1919 | Italy | Midfield | |
| 01/1991 - 06/1994 |  | RFC Liège | Belgium | Midfield | |
| 07/1990 - 12/1990 |  | Julius Berger | Nigeria | Midfield |
Club matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Champions League | 9 | 8 | 1 | 2 | 676 | - | - | - | - | - | - | » All matches |
| Champions League Qual. | 2 | 2 | - | - | 180 | 1 | - | - | 1 | - | - | » All matches |
| Europa League | 22 | 20 | 2 | 2 | 1.855 | 2 | - | - | 4 | - | - | » All matches |
| UI-Cup | 7 | 7 | - | 2 | 569 | - | - | - | 1 | - | - | » All matches |
| Pro League | 91 | 79 | 12 | 9 | 7.265 | 3 | - | - | 9 | - | 1 | » All matches |
| Bundesliga | 139 | 128 | 11 | 26 | 11.108 | 6 | 1 | 14 | 31 | 2 | - | » All matches |
| DFB-Pokal | 6 | 6 | - | 3 | 550 | 1 | - | - | 3 | - | - | » All matches |
| Regionalliga Nord | 1 | 1 | - | - | 90 | - | - | - | - | - | - | » All matches |
| League Cup | 1 | 1 | - | - | 90 | - | - | - | - | - | - | » All matches |
| Serie A | 36 | 29 | 7 | 1 | 2.718 | 1 | - | - | 7 | - | - | » All matches |
| Coppa Italia | 5 | 5 | - | - | 360 | - | - | - | 1 | - | - | » All matches |
| Eredivisie | 54 | 53 | 1 | 5 | 4.550 | 8 | - | 2 | 5 | 2 | - | » All matches |
| KNVB beker | 8 | 8 | - | 2 | 667 | - | - | - | 1 | - | - | » All matches |
| Super Cup | 1 | 1 | - | - | 90 | - | - | - | - | - | - | » All matches |
| Total | 382 | 348 | 34 | 52 | 30.768 | 22 | 1 | - | 63 | 4 | 1 |
International matches
| Competition | Matches | Start | In | Out | Min. | Scores | 11m | Ass | Yellow | Yellow-Red | Red | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | World Cup | 8 | 8 | - | 2 | 704 | 1 | - | - | 2 | - | - | » All matches |
| Friendlies | 4 | 4 | - | 1 | 316 | - | - | - | - | - | - | » All matches |
| Olympic Games | 5 | 5 | - | - | 449 | - | - | - | 1 | 1 | - | » All matches |
| Confederations Cup | 1 | 1 | - | - | 90 | - | - | - | - | - | - | » All matches |
 | Africa Cup | 15 | 15 | - | 1 | 1.429 | - | - | - | 2 | - | - | » All matches |
| Total | 33 | 33 | - | 4 | 2.988 | 1 | - | - | 5 | 1 | - |