Citizen: every transfer in and out, fees paid and earned, squad market value, €6.9m spent and €2.5m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-02-10 | Woo-bin Jung | Citizen | Jinju Citizen | Free |
| 2026-02-09 | Hyeon-oh Kim | Citizen | Gyeongnam | Loan |
| 2026-01-17 | Geon-ho Moon | Citizen | Hwaseong | Loan |
| 2026-01-16 | Diogo Oliveira | Paysandu | Citizen | Free |
| 2026-01-16 | Chang-rae Ha | Nagoya Grampus Eight | Citizen | Free |
| 2026-01-16 | Won-sang Um | Ulsan HD | Citizen | Free |
| 2026-01-16 | Gustav Ludwigson | Ulsan HD | Citizen | Free |
| 2026-01-16 | Sung-gwon Cho | Gwangju Football Club | Citizen | Free |
| 2026-01-16 | Geon-ho Moon | Cheonan City | Citizen | Free |
| 2026-01-16 | João Victor | Guarani | Citizen | Free |
| 2026-01-16 | Min-woo Kim | Citizen | Suwon Bluewings | Loan |
| 2026-01-16 | Seung-won Yeo | Citizen | Incheon United Football Club | Loan |
| 2026-01-16 | Jun-gyu Lee | Citizen | Gimhae City | Loan |
| 2026-01-16 | Kelvin | Citizen | Botafogo-SP | Free |
| 2026-01-16 | Han-seo Kim | Citizen | Yongin City | Loan |
| 2025-07-24 | João Victor | Guarani | Citizen | Loan |
| 2025-07-15 | Aaron Calver | Citizen | Seoul E. | Free |
| 2025-07-11 | Min-woo Kim | Citizen | Gimpo | Loan |
| 2025-07-11 | Woo-bin Jung | Citizen | Gimpo | Loan |
| 2025-07-10 | Kelvin | Citizen | Atlético GO | Free |