Barnsley: every transfer in and out, fees paid and earned, squad market value, €6.4m spent and €25m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-01 | Max Watters | Barnsley | Without Club | — |
| 2026-07-01 | Jon Russell | Barnsley | Mansfield Town | Free |
| 2026-01-30 | Tawanda Chirewa | Wolves | Barnsley | Loan |
| 2026-01-15 | Owen Goodman | Crystal Palace | Barnsley | Loan |
| 2026-01-15 | Kacper Łopata | Barnsley | Walsall | Loan |
| 2026-01-14 | Neil Farrugia | Barnsley | Dundee United | — |
| 2026-01-08 | Jon Russell | Barnsley | Mansfield Town | Loan |
| 2025-08-19 | Sam Cosgrove | Barnsley | Auckland FC | Free |
| 2025-08-14 | Kacper Łopata | Barnsley | Bristol Rovers | Loan |
| 2025-08-04 | Donovan Pines | Barnsley | Grazer AK 1902 | Free |
| 2025-07-28 | Patrick Kelly | West Ham U21 | Barnsley | — |
| 2025-07-18 | Max Watters | Barnsley | Dundee United | Loan |
| 2025-02-03 | Sam Cosgrove | Barnsley | Stockport | Loan |
| 2025-02-03 | Dexter Lembikisa | Wolves U21 | Barnsley | Loan |
| 2025-01-30 | Joe Gauci | Aston Villa | Barnsley | Loan |
| 2025-01-03 | Neil Farrugia | Shamrock Rovers | Barnsley | Free |
| 2024-08-29 | Kacper Łopata | Barnsley | Ross County | Loan |
| 2024-08-24 | Callum Styles | Barnsley | West Brom | €600k |
| 2024-08-09 | Gabriel Slonina | Chelsea | Barnsley | Loan |
| 2024-08-06 | Nicky Cadden | Barnsley | Hibernian FC | Free |