Groningen U21 (U21 Divisie 1): every transfer in and out, fees paid and earned, squad market value, €58k spent.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2024-07-26 | Liam van Gelderen | Groningen U21 | RKC Waalwijk | Free |
| 2024-07-01 | Jan Muller | Groningen U21 | Koninklijke HFC | Free |
| 2024-07-01 | Jay Kuiper | Groningen U21 | Roden | Free |
| 2024-07-01 | Player | Groningen U21 | FC Den Bosch | Free |
| 2024-07-01 | Steyn Potma | Groningen U21 | Cambuur U21 | Free |
| 2024-07-01 | Joël van Kaam | Groningen U21 | ACV | Free |
| 2024-01-01 | Liam van Gelderen | FC Groningen | Groningen U21 | Free |
| 2024-01-01 | Nordin Musampa | FC Groningen | Groningen U21 | Free |
| 2023-12-01 | Kian Slor | Groningen U21 | FC Groningen | Free |
| 2023-08-31 | Agan Mjaki | Groningen U21 | Laçi | Free |
| 2023-07-19 | Nikolas Talo | Groningen U21 | KTP | Free |
| 2023-07-01 | Jasper Meijster | Groningen U21 | FC Groningen | Free |
| 2023-07-01 | Dirk Baron | Groningen U21 | FC Groningen | Free |
| 2023-01-01 | Emmanuel Matuta | FC Groningen | Groningen U21 | Free |
| 2022-07-01 | Alex Mortensen | Kalmar FF | Groningen U21 | €58k |
| 2022-07-01 | Kian Slor | FC Groningen | Groningen U21 | Free |
| 2022-07-01 | Joël van Kaam | FC Groningen | Groningen U21 | Free |
| 2022-07-01 | Player | Groningen U21 | OFC Oostzaan | Free |
| 2022-07-01 | Nathan Holder | Groningen U21 | Levski Sofia | Free |
| 2021-07-01 | Alex Mortensen | Kalmar FF | Groningen U21 | Loan |