Willem II Tilburg (Eredivisie): every transfer in and out, fees paid and earned, squad market value, €4.5m spent and €17m earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2026-02-03 | Calvin Twigt | Go Ahead Eagles | Willem II | Loan |
| 2026-01-21 | Amine Et-Taïbi | KV Mechelen | Willem II | €650k |
| 2026-01-20 | Emilio Kehrer | Willem II | FC Ingolstadt | Loan |
| 2026-01-06 | Max de Waal | Willem II | Without Club | — |
| 2025-09-12 | Rob Nizet | Willem II | Gaziantep FK | Free |
| 2025-09-11 | Mickaël Tirpan | Willem II | Retired | — |
| 2025-09-01 | Rúnar Thór Sigurgeirsson | Willem II | Sönderjyske | — |
| 2025-08-29 | Samuel Bamba | VfL Bochum | Willem II | Loan |
| 2025-08-18 | Ringo Meerveld | Willem II | Heerenveen | €450k |
| 2025-08-15 | Finn Stam | AZ Alkmaar U21 | Willem II | Loan |
| 2025-08-14 | Jesse Bosch | Willem II | GKS Katowice | Free |
| 2025-08-14 | Gijs Besselink | FC Twente | Willem II | Loan |
| 2025-08-11 | Khaled Razak | Willem II | Sparta U21 | — |
| 2025-07-28 | Jeremy Bokila | Willem II | Livingston FC | Free |
| 2025-07-21 | Nathan Tjoe-A-On | Swansea | Willem II | Free |
| 2025-07-01 | Tommy St. Jago | Willem II | KV Mechelen | Free |
| 2025-07-01 | Patrick Joosten | Willem II | Without Club | — |
| 2025-07-01 | Maarten Schut | Willem II | UNA | Free |
| 2025-07-01 | Karst de Leeuw | Willem II U21 | Willem II | — |
| 2025-07-01 | Justin Hoogma | Heracles Almelo | Willem II | — |