RC Lens B: every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2025-07-09 | Souleymane Sagnan | RC Lens B | Lens | — |
| 2025-07-01 | Oscar Lenne | RC Lens B | RC Lens Espoir | — |
| 2025-07-01 | Kembo Diliwidi | RC Lens B | Lens | — |
| 2025-07-01 | Ilan Jourdren | RC Lens B | Lens | — |
| 2025-07-01 | Hervé Boua Dié | RC Lens B | Valenciennes B | Free |
| 2025-07-01 | Fodé Sylla | RC Lens B | Lens | — |
| 2025-07-01 | Alpha Diallo | RC Lens B | Lens | — |
| 2025-02-02 | Kembo Diliwidi | RC Lens B | Le Mans FC | Loan |
| 2025-02-02 | Ilan Jourdren | Montpellier U19 | RC Lens B | — |
| 2024-08-13 | Alpha Diallo | Bordeaux U19 | RC Lens B | Free |
| 2024-07-11 | Fodé Sylla | RC Lens B | Yverdon Sport | Loan |
| 2024-07-06 | Tom Pouilly | RC Lens B | Lens | — |
| 2024-07-02 | Adam Abeddou | RC Lens B | EFAFC | Free |
| 2024-07-01 | Souleymane Sagnan | RC Lens U19 | RC Lens B | — |
| 2024-07-01 | Oscar Lenne | RC Lens U19 | RC Lens B | — |
| 2024-07-01 | Kembo Diliwidi | RC Lens U19 | RC Lens B | — |
| 2024-07-01 | Ismaëlo Ganiou | RC Lens B | Lens | — |
| 2024-07-01 | Hervé Boua Dié | RC Lens U19 | RC Lens B | — |
| 2024-07-01 | Ayanda Sishuba | RC Lens B | Lens | — |
| 2024-07-01 | Anthony Bermont | RC Lens B | Lens | — |