Brentford B: every transfer in and out, fees paid and earned, squad market value, €3.7m spent.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-01-01 | Iwan Morgan | Brentford B | Shrewsbury | Loan |
| 2025-07-25 | Benjamin Fredrick | Brentford B | FCV Dender EH | Loan |
| 2025-07-04 | Julian Eyestone | Brentford B | Brentford | — |
| 2025-07-04 | Benjamin Arthur | Brentford B | Brentford | — |
| 2025-07-04 | Ashley Hay | Brentford B | Dundee FC | Free |
| 2025-07-01 | Tony Yogane | Brentford B | Dundee FC | Loan |
| 2025-02-03 | Romelle Donovan | Birmingham | Brentford B | Loan |
| 2025-01-23 | Tony Yogane | Brentford B | Exeter City | Loan |
| 2025-01-01 | Ashley Hay | Brentford B | Cheltenham | Loan |
| 2024-07-01 | Vincent Angelini | Brentford B | Without Club | — |
| 2024-07-01 | Michael Olakigbe | Brentford B | Wigan | Loan |
| 2024-07-01 | Julian Eyestone | Blue Devils | Brentford B | Free |
| 2024-07-01 | Ji-soo Kim | Brentford B | Brentford | — |
| 2024-07-01 | Daniel Oyegoke | Brentford B | Heart of Midl. | Free |
| 2024-07-01 | Benjamin Fredrick | Simoiben FC | Brentford B | — |
| 2024-07-01 | Ben Winterbottom | Brentford B | Brentford | — |
| 2024-01-31 | Mukhammadali Urinboev | Pakhtakor | Brentford B | Loan |
| 2024-01-30 | Michael Olakigbe | Brentford B | Peterborough | Loan |
| 2023-09-01 | Iwan Morgan | Swansea U18 | Brentford B | — |
| 2023-09-01 | Ashley Hay | Hitchin Town | Brentford B | Free |