Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 15.06.2024 | K. Van de Perre | — | Union St. Gilloise | Free |
| 15.06.2024 | V. Chambaere | Genk | Union St. Gilloise | Free |
| 16.01.2024 | H. Lindner | FC Sion | Union St. Gilloise | Loan |
| 09.01.2024 | A. Dony | Dender | Union St. Gilloise | N/A |
| 01.09.2023 | K. Rodríguez | — | Union St. Gilloise | N/A |
| 01.09.2023 | A. Castro-Montes | Gent | Union St. Gilloise | N/A |
| 18.08.2023 | M. Amoura | FC Lugano | Union St. Gilloise | N/A |
| 27.07.2023 | N. Sadiki | Anderlecht | Union St. Gilloise | N/A |
| 13.07.2023 | K. Mac Allister | — | Union St. Gilloise | N/A |
| 01.07.2023 | M. Rasmussen | Brann | Union St. Gilloise | N/A |
| 01.07.2023 | M. Sorinola | — | Union St. Gilloise | N/A |
| 01.07.2023 | K. Machida | — | Union St. Gilloise | N/A |
| 22.06.2023 | C. Vanhoutte | Cercle Brugge | Union St. Gilloise | N/A |
| 15.06.2023 | F. Leysen | PSV Eindhoven | Union St. Gilloise | Free |
| 15.06.2023 | H. Teklab | — | Union St. Gilloise | Free |
| 28.01.2023 | Y. Vertessen | PSV Eindhoven | Union St. Gilloise | Loan |
| 07.01.2023 | A. De Bolle | — | Union St. Gilloise | Free |
| 01.01.2023 | C. Terho | — | Union St. Gilloise | N/A |
| 08.10.2022 | I. Moutha-Sebtaoui | Charleroi | Union St. Gilloise | Free |
| 12.08.2022 | José Rodríguez | — | Union St. Gilloise | Free |
| 11.08.2022 | V. Boniface | Bodo/Glimt | Union St. Gilloise | N/A |
| 30.07.2022 | O. El Azzouzi | — | Union St. Gilloise | N/A |
| 30.07.2022 | G. Nilsson | — | Union St. Gilloise | N/A |
| 04.07.2022 | S. Adingra | Brighton | Union St. Gilloise | Loan |
| 01.07.2022 | J. Imbrechts | Charleroi | Union St. Gilloise | N/A |
| 01.07.2022 | M. Lewis | — | Union St. Gilloise | N/A |
| 01.07.2022 | V. Boone | — | Union St. Gilloise | N/A |
| 01.07.2022 | A. Hamzaoui | — | Union St. Gilloise | N/A |
| 01.07.2022 | L. Amani | Charleroi | Union St. Gilloise | N/A |
| 01.07.2022 | R. Sykes | — | Union St. Gilloise | N/A |
| 20.06.2022 | D. Eckert Ayensa | — | Union St. Gilloise | N/A |
| 15.06.2022 | A. Dony | St. Truiden | Union St. Gilloise | N/A |
| 01.02.2022 | D. Undav | Brighton | Union St. Gilloise | Loan |
| 28.01.2022 | Álex Millán | Villarreal | Union St. Gilloise | Loan |
| 22.01.2022 | Cameron Puertas | Lausanne | Union St. Gilloise | N/A |
| 05.01.2022 | K. Kozłowski | Brighton | Union St. Gilloise | Loan |
| 04.01.2022 | K. Machida | — | Union St. Gilloise | Loan |
| 11.08.2021 | K. Mitoma | Brighton | Union St. Gilloise | Loan |
| 07.07.2021 | D. Marcq | Zulte Waregem | Union St. Gilloise | Free |
| 02.07.2021 | F. Avenatti | Standard Liege | Union St. Gilloise | Loan |
| 01.07.2021 | B. Nieuwkoop | Feyenoord | Union St. Gilloise | Free |
| 01.07.2021 | L. Paolucci | — | Union St. Gilloise | N/A |
| 01.07.2021 | R. Ferber | — | Union St. Gilloise | N/A |
| 01.07.2021 | M. Sorinola | — | Union St. Gilloise | Free |
| 01.07.2021 | L. Amani | Charleroi | Union St. Gilloise | Loan |
| 01.07.2021 | L. Pirard | — | Union St. Gilloise | N/A |
| 20.01.2021 | L. Pirard | — | Union St. Gilloise | Loan |
| 05.10.2020 | A. Cochrane | Brighton | Union St. Gilloise | Loan |
| 29.09.2020 | E. Jordanov | — | Union St. Gilloise | Free |
| 12.09.2020 | B. Labeau | KuPS | Union St. Gilloise | N/A |