Hitachi Kashiwa Reysol (J1 League): every transfer in and out, fees paid and earned, squad market value, €7.7m spent and €13m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2027-01-01 | Kanade Tsuneto | Chuo University | Kashiwa Reysol | Free |
| 2027-01-01 | Shusuke Furuya | Tokyo Int Univ. | Kashiwa Reysol | Free |
| 2026-07-01 | Daiki Sakata | Kashiwa Reysol | Without Club | — |
| 2026-07-01 | Shumpei Naruse | Kashiwa Reysol | Without Club | — |
| 2026-02-01 | Hinata Yamauchi | Kawasaki Front. | Kashiwa Reysol | — |
| 2026-02-01 | Kaiji Chonan | Reysol U18 | Kashiwa Reysol | — |
| 2026-02-01 | Rei Shimano | Meiji Uni | Kashiwa Reysol | Free |
| 2026-02-01 | Yoshikaze Tsunoda | Keio Univ. | Kashiwa Reysol | Free |
| 2026-02-01 | Yusei Yamanouchi | Toyo Univ. | Kashiwa Reysol | Free |
| 2026-02-01 | Hayato Tanaka | Kashiwa Reysol | Cerezo Osaka | Loan |
| 2026-01-12 | Koya Yuruki | Vissel Kobe | Kashiwa Reysol | — |
| 2026-01-12 | Tomoaki Okubo | Urawa Reds | Kashiwa Reysol | — |
| 2026-01-12 | Eiichi Katayama | Kashiwa Reysol | Urawa Reds | Free |
| 2026-01-12 | Tomoya Koyamatsu | Kashiwa Reysol | Nagoya Grampus | — |
| 2026-01-09 | Diego | Kashiwa Reysol | Vissel Kobe | Free |
| 2025-08-20 | Kengo Nagai | Tokushima Vort. | Kashiwa Reysol | — |
| 2025-07-25 | Yudai Konishi | Monte. Yamagata | Kashiwa Reysol | — |
| 2025-06-08 | Seiya Baba | H. C. Sapporo | Kashiwa Reysol | — |
| 2025-06-08 | Yota Komi | Albirex Niigata | Kashiwa Reysol | — |
| 2025-06-07 | Yusuke Segawa | Kawasaki Front. | Kashiwa Reysol | — |