Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 04/2021 |  | Tarik Muharemović | DF |  | AKA WAC U18 | AKA WAC U18 |
| 03/2021 |  | Roman Stary | MA | |||
| 02/2021 |  | Gustav Henriksson | DF |  | IF Elfsborg | IF Elfsborg |
| 01/2021 | | Thorsten Röcher | FW |  | FC Ingolstadt 04 | Ingolstadt |
| 01/2021 | | Marcel Holzer | FW |  | SKU Amstetten | SKU Amstetten |
| 11/2020 | | Adis Jasic | MF |  | Wolfsberger AC (A) | Wolfsb. AC (A) |
| 10/2020 | | David Skubl | GK | | AKA WAC U18 | AKA WAC U18 |
| 10/2020 | | Mario Pavelić | DF |  | HNK Rijeka | HNK Rijeka |
| 09/2020 |  | Dario Vizinger | FW |  | NK Celje | NK Celje |
| 08/2020 |  | Dejan Joveljić | FW |  | Eintracht Frankfurt | E. Frankfurt |
| 08/2020 |  | Luka Lochoshvili | DF |  | Dinamo Tbilisi | Dinamo Tbilisi |
| 08/2020 | | Matthäus Taferner | MF |  | Dynamo Dresden | Dresden |
| 08/2020 |  | Eliel Peretz | MF |  | Hapoel Hadera | Hapoel Hadera |
| 08/2020 | | Amar Hodzic | FW |  | Vorwärts Steyr | Vorwärts Steyr |
| 07/2020 | | Guram Giorbelidze | DF |  | Dila Gori | Dila Gori |
| 07/2020 | | Dominik Baumgartner | DF |  | VfL Bochum | Bochum |
| 07/2020 | | Jonathan Scherzer | DF |  | FC Admira Wacker | Admira Wacker |
| 07/2020 | | Leo Vielgut | FW | | AKA WAC U18 | AKA WAC U18 |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2021 | | Marc Andre Schmerböck | FW |  | TSV Hartberg | TSV Hartberg |
| 09/2020 | | Marcel Holzer | FW | | SKU Amstetten | SKU Amstetten |
| 08/2020 | | Shon Weissman | FW |  | Real Valladolid | Valladolid |
| 08/2020 | | Joshua Steiger | MF |  | SV Lafnitz | SV Lafnitz |
| 08/2020 | | Bajram Syla | MF | | SV Lafnitz | SV Lafnitz |
| 07/2020 |  | Miguel Vieira | DF |  | İstanbul Başakşehir | Başakşehir |
| 07/2020 | | Miloš Jojić | MF | | İstanbul Başakşehir | Başakşehir |
| 07/2020 | | Christian Dobnik | GK | | Wolfsberger AC (A) | Wolfsb. AC (A) |
| 07/2020 | | Dominik Baumgartner | DF | | VfL Bochum | Bochum |
| 07/2020 | | Manfred Gollner | DF | | TSV Hartberg | TSV Hartberg |
| 07/2020 |  | Lukas Schmitz | DF |  | VVV-Venlo | VVV |
| 07/2020 | | Romano Schmid | MF |  | Werder Bremen | Werder |
| 07/2020 | | Alexander Schmidt | FW |  | FC Liefering | FC Liefering |