Derby: every transfer in and out, fees paid and earned, squad market value, €77m spent and €66m earned. Tracked squad: ACTUAL Value €43m vs €59m market value. Valued as of 2026-08-25.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-08-20 | Ryan Hedges | Blackburn | Derby | Free |
| 2026-08-05 | Liam Thompson | Derby | Mansfield Town | Free |
| 2026-08-02 | Danny Batth | Derby | Millwall | Free |
| 2026-07-27 | Ben Osborn | Derby | Stockport | Free |
| 2026-07-23 | Jake Rooney | Derby | Boston United | Free |
| 2026-07-22 | Filip Bilbija | SC Paderborn 07 | Derby | Free |
| 2026-07-14 | Charlie Taylor | Southampton FC | Derby | Free |
| 2026-07-01 | Bobby Clark | Fußballclub Red Bull Salzburg | Derby | €8m |
| 2026-07-01 | Callum Elder | Derby | Lincoln City | Free |
| 2026-02-05 | Andreas Weimann | Derby | Rapid Vienna | Loan |
| 2026-02-05 | Andreas Weimann | Derby | SK Rapid | Loan |
| 2026-02-02 | Sammie Szmodics | Ipswich | Derby | Loan |
| 2026-02-02 | Derry Murkin | FC Utrecht | Derby | €2m |
| 2026-01-30 | Kayden Jackson | Derby | Bradford | Free |
| 2026-01-30 | Jake Rooney | Derby | Boston United | Loan |
| 2026-01-29 | Jaydon Banel | Burnley U21 | Derby | Loan |
| 2026-01-27 | Corey Blackett-Taylor | Derby | Bolton | Loan |
| 2026-01-21 | Ryan Nyambe | Derby | Reading FC | Loan |
| 2026-01-16 | Ebou Adams | Derby | Portsmouth | Free |
| 2026-01-15 | Curtis Nelson | Derby | Milton Keynes Dons | Free |