Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1991 |  | Ørjan Berg | MF |  | Rosenborg BK | Rosenborg |
| 01/1991 |  | Daniel Borraccini | FW | |||
| 10/1990 | | Fredy Strasser | MA | |||
| 07/1990 | | Michele Nicora | GK |  | FC Locarno | FC Locarno |
| 07/1990 | | Martin Andermatt | DF |  | Grasshopper Club Zürich | Grasshoppers |
| 07/1990 | | Daniel Fasel | DF |  | Neuchâtel Xamax FCS | Xamax |
| 07/1990 |  | Hans-Jürgen Brunner | MF |  | Alemannia Aachen | Aachen |
| 07/1990 | | Christian Közle | MF | |||
| 07/1990 |  | Lars Larsen | MF |  | B 1913 Odense | Odense 1913 |
| 07/1990 | | Reinhold Mathy | MF |  | KFC Uerdingen 05 | Uerdingen |
| 07/1990 | | Markus Nyfeler | MF | | Grasshopper Club Zürich | Grasshoppers |
| 07/1990 | | René Ramundo | MF | |||
| 07/1990 | | Emilio Munera | FW |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 04/1991 | | Lars Larsen | MF |  | Ikast FS | Ikast FS |
| 01/1991 |  | Dan Corneliusson | FW |  | Malmö FF | Malmö FF |
| 07/1990 | | Jörg Stiel | GK |  | FC St. Gallen | St.Gallen |
| 07/1990 | | Reto Baumgartner | DF |  | FC Basel 1893 | FC Basel |
| 07/1990 | | Martin Frei | DF |  | FC Kreuzlingen | FC Kreuzlingen |
| 07/1990 | | Peter Schepull | DF |  | Servette FC | Servette |
| 07/1990 | | Brian Bertelsen | MF | | FC Basel 1893 | FC Basel |
| 07/1990 |  | Maurizio Jacobacci | FW | | Servette FC | Servette |
| 07/1990 | | Andreas Löbmann | FW |  | BSC Young Boys | Young Boys |