Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2020 |  | Orest Shala | AS-CO |  | 1. FC Union Berlin U15 | U15 |
| 01/2020 |  | Lawrence Ati-Zigi | GK |  | FC Sochaux | Sochaux |
| 01/2020 |  | Lorenzo González | FW |  | Málaga CF | Málaga |
| 01/2020 | | Silvan Gönitzer | DF |  | FC Schaffhausen | FC Schaffhausen |
| 12/2019 | | Armin Abaz | GK |  | FC St. Gallen II | St. Gallen II |
| 09/2019 |  | Ermedin Demirović | FW |  | CD Alavés | Alavés |
| 09/2019 |  | André Ribeiro | FW |  | Sporting Braga B | Sporting Braga B |
| 07/2019 | | Lukas Görtler | MF |  | FC Utrecht | FC Utrecht |
| 07/2019 |  | Fabiano Alves | DF |  | Septemvri Sofia | Septemvri Sofia |
| 07/2019 |  | Jonathan Klinsmann | GK |  | Hertha BSC | Hertha BSC |
| 07/2019 | | Nico Strübi | GK | | FC St. Gallen II | St. Gallen II |
| 07/2019 | | Adonis Ajeti | DF |  | FC Chiasso | FC Chiasso |
| 07/2019 |  | Betim Fazliji | DF | | FC St. Gallen II | St. Gallen II |
| 07/2019 |  | Yannis Letard | DF |  | VfR Aalen | VfR Aalen |
| 07/2019 | | Vincent Rüfli | DF |  | Paris FC | Paris FC |
| 07/2019 | | Moreno Costanzo | MF |  | FC Thun Berner Oberland | FC Thun |
| 07/2019 | | Fabio Solimando | MF |  | FCO St. Gallen U18 | U18 |
| 07/2019 | | Tim Staubli | MF | | FC St. Gallen II | St. Gallen II |
| 07/2019 | | Eduard Schmidt | G-AN |  | Wacker Burghausen U19 | U19 |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2019 |  | Yannis Tafer | FW |  | Étoile du Sahel | ESS |
| 07/2019 | | Nassim Ben Khalifa | FW |  | Grasshopper Club Zürich | Grasshoppers |
| 07/2019 | | Daniel Lopar | GK |  | Western Sydney Wanderers | Western Sydney |
| 07/2019 | | Gianluca Tolino | GK |  | FC Wil 1900 | FC Wil |
| 07/2019 | | Silvan Gönitzer | DF | | FC Schaffhausen | FC Schaffhausen |
| 07/2019 |  | Leonel Mosevich | DF |  | CD Nacional | CD Nacional |
| 07/2019 | | Andreas Wittwer | DF |  | Grasshopper Club Zürich II | GC Zürich II |
| 07/2019 | | Majeed Ashimeru | MF |  | RB Salzburg | RB Salzburg |
| 07/2019 | | Vincent Sierro | MF |  | BSC Young Boys | Young Boys |
| 07/2019 | | Simone Rapp | FW | | FC Thun Berner Oberland | FC Thun |