Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/1991 |  | Walter Baroffio | DF | |||
| 07/1990 | | Sandro Camerieri | DF | |||
| 07/1990 | | Sébastien Barberis | MF | |||
| 07/1990 | | Raphaël Comisetti | MF | |||
| 07/1990 | | Yves Débonnaire | MF |  | FC Sion | FC Sion |
| 07/1990 | | Didier Engler | MF |  | FC Lausanne-Sport | FC Lausanne |
| 07/1990 |  | Andrey Timoshenko | MF |  | Spartak Moskva | Spartak |
| 07/1990 | | Pascal Bezzola | FW | | FC Lausanne-Sport | FC Lausanne |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/1990 |  | Pablo Higueras | MF |  | FC Bulle | FC Bulle |
| 07/1990 |  | Wanderley Júnior | MF |  | FC Chiasso | FC Chiasso |
| 07/1990 | | Xavier Dietlin | FW |  | Servette FC | Servette |