Watford FC (Premier League): every transfer in and out, fees paid and earned, squad market value, €283m spent and €341m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-07-01 | Nampalys Mendy | Watford | Without Club | — |
| 2026-02-02 | Saba Goglichidze | Udinese | Watford | Loan |
| 2026-02-02 | Moussa Sissoko | Watford | Panathinaikos | — |
| 2026-01-21 | Edoardo Bove | Roma | Watford | Free |
| 2025-09-12 | Tom Dele-Bashiru | Watford | Genclerbirligi | Loan |
| 2025-09-01 | Jérémy Petris | R Charleroi SC | Watford | €2m |
| 2025-08-31 | Ryan Andrews | Watford | Young Boys | €3m |
| 2025-08-28 | Nampalys Mendy | Lens | Watford | Free |
| 2025-08-08 | Max Alleyne | Man City U21 | Watford | Loan |
| 2025-08-06 | João Ferreira | Watford | Saint-Étienne | €3m |
| 2025-08-04 | Ryan Porteous | Watford | LAFC | €865k |
| 2025-07-27 | Jorge Hurtado | Watford | Millonarios | Loan |
| 2025-07-18 | Nestory Irankunda | FC Bayern II | Watford | €3m |
| 2025-07-15 | Mileta Rajović | Watford | Legia Warszawa | €3m |
| 2025-07-01 | Marc Bola | Samsunspor | Watford | Free |
| 2025-07-01 | Hector Kyprianou | Peterborough | Watford | Free |
| 2025-07-01 | Francisco Sierralta | Watford | AJ Auxerre | €1.8m |
| 2025-06-30 | Vakoun Bayo | Watford | Udinese | Free |
| 2025-04-11 | Jonathan Bond | Watford | Houston | — |
| 2025-03-21 | Kayky Almeida | Watford | Fluminense U20 | Free |