Debrecen: every transfer in and out, fees paid and earned, squad market value, €95k spent and €3.5m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-01 | Yacouba Silue | Debrecen | OFK Beograd | — |
| 2026-07-01 | Blaz Boskovic | NK Lokomotiva | Debrecen | Free |
| 2026-02-27 | Stephen Odey | Without Club | Debrecen | — |
| 2026-02-06 | Yacouba Silue | Debrecen | OFK Beograd | Loan |
| 2026-01-28 | Patrik Demjén | MTK Budapest | Debrecen | — |
| 2025-08-18 | Neven Djurasek | Debrecen | Zrinjski | Free |
| 2025-08-15 | Pape Sissoko | Stade Reims | Debrecen | Loan |
| 2025-08-04 | György Komáromi | NK Maribor | Debrecen | Loan |
| 2025-08-02 | Dejan Djokic | FC Sion | Debrecen | Loan |
| 2025-07-28 | Vyacheslav Kulbachuk | Džiugas Telšiai | Debrecen | €50k |
| 2025-07-24 | Álex Bermejo | Farense | Debrecen | Free |
| 2025-07-01 | Josua Mejías | Kallithea | Debrecen | Free |
| 2025-07-01 | Brandon Dominguès | Debrecen | Real Oviedo | €500k |
| 2025-03-31 | Shuichi Gonda | Without Club | Debrecen | Loan |
| 2025-02-03 | Henrik Rönnlöf Castegren | Sirius | Debrecen | Loan |
| 2025-01-28 | Maurides | St. Pauli | Debrecen | Loan |
| 2025-01-21 | Naoaki Senaga | Debrecen | OKMK Olmaliq | Free |
| 2025-01-10 | Victor Braga | Debrecen | Tobol | Free |
| 2024-08-24 | Alexandros Kyziridis | Debrecen | Michalovce | Free |
| 2024-08-08 | Hamzat Ojediran | Debrecen | Lens | €1.4m |