| Zeitraum | Mannschaft | Position | |
|---|---|---|---|
| 01/2019 - 06/2020 |  | Hannover 96 | Co-Trainer |
| 12/2013 - 08/2018 |  | Ferencvárosi TC | Co-Trainer |
| 10/2010 - 04/2011 |  | Gençlerbirliği | Trainer |
| 07/2009 - 10/2010 | | Gençlerbirliği | Co-Trainer |
| 03/2007 - 06/2008 |  | Borussia Dortmund | Co-Trainer |
| 01/2004 - 01/2007 |  | Hamburger SV | Co-Trainer |
| 09/2003 - 06/2005 |  | Ghana | Trainer |
| 07/2002 - 12/2002 |  | Asante Kotoko | Trainer |
| 01/2000 - 02/2001 |  | VfL Bochum | Trainer |
| 07/1995 - 12/1999 | | VfL Bochum | Co-Trainer |
| Zeitraum | Mannschaft | Position | |
|---|---|---|---|
| 07/1981 - 06/1995 | | VfL Bochum | Torwart |
| 07/1976 - 06/1981 |  | Preußen Münster | Torwart |
