Cardiff MU (Premier League): every transfer in and out, fees paid and earned, squad market value.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-14 | Adam Roscrow | Cardiff MU | Llantwit Major | Free |
| 2026-07-01 | Kelland Absalom | Cardiff MU | TBC | Free |
| 2026-07-01 | Kelland Absalom | Cardiff MU | Cambrian & Clydach | Free |
| 2026-07-01 | Jake Morris | Cardiff MU | Cambrian & Clydach | Free |
| 2026-07-01 | Matt Chubb | Cardiff MU | Briton Ferry | Free |
| 2026-07-01 | Lewis Rees | Cardiff MU | Haverfordwest County | Free |
| 2026-07-01 | Liam Walsh | Cardiff MU | Aberystwyth Town | Free |
| 2025-08-05 | Dan John | Haverfordwest County | Cardiff MU | Free |
| 2025-07-31 | Harri John | Haverfordwest County | Cardiff MU | Free |
| 2025-07-22 | Liam Walsh | Aberystwyth Town | Cardiff MU | Free |
| 2025-07-18 | Evan Cadwallader | Cardiff MU | Newport City | Free |
| 2025-07-01 | Player | Cardiff MU | TBC | Free |
| 2025-07-01 | Oliver Saunders | Cardiff MU | TBC | Free |
| 2025-07-01 | Jasper Payne | Briton Ferry | Cardiff MU | Free |
| 2025-07-01 | Jac Clay | Cardiff MU | Penybont | Free |
| 2025-07-01 | Lifumpa Mwandwe | Connah's Quay | Cardiff MU | Free |
| 2025-02-03 | Evan Cadwallader | Cardiff MU | Llantwit Major | Loan |
| 2025-01-09 | Kelland Absalom | Weston-super-Mare | Cardiff MU | Free |
| 2024-08-03 | Jack Veale | Tiverton Town | Cardiff MU | Free |
| 2024-07-30 | Kyle McCarthy | Cardiff MU | Haverfordwest County | Free |