Willem II U17: every transfer in and out, fees paid and earned, squad market value and €112k earned.
| Date | Player | From | To | Fee |
|---|---|---|---|---|
| 2020-07-01 | Maarten Schut | Willem II U17 | Willem II U18 | — |
| 2020-07-01 | Joel Ideho | Willem II U17 | Ajax U18 | €56k |
| 2020-07-01 | Emmanuel van de Blaak | Willem II U17 | PSV U17 | €56k |
| 2020-01-01 | Emmanuel van de Blaak | Willem II Youth | Willem II U17 | — |
| 2018-07-01 | Maarten Schut | Willem II Youth | Willem II U17 | — |
| 2018-07-01 | Joel Ideho | Willem II Youth | Willem II U17 | — |
| 2016-07-01 | Zakaria Aboukhlal | Willem II U17 | Willem II U19 | — |
| 2016-07-01 | Luuk Wouters | Willem II U17 | Willem II U19 | — |
| 2015-07-01 | Zakaria Aboukhlal | Willem II Youth | Willem II U17 | — |
| 2015-07-01 | Roshon van Eijma | Willem II U17 | Willem II U19 | — |
| 2015-07-01 | Luuk Wouters | Willem II Youth | Willem II U17 | — |
| 2014-09-01 | Frenkie de Jong | Willem II U17 | Willem II U19 | — |
| 2014-07-01 | Mats Deijl | Willem II U17 | Brabant Utd U19 | Free |
| 2013-07-01 | Frenkie de Jong | Willem II/RKC Y. | Willem II/RKC-17 | — |
| 2011-07-01 | Branco van den Boomen | Willem II/RKC-17 | Ajax U17 | — |
| 2010-07-01 | Virgil Misidjan | Willem II/RKC-17 | Willem II/RKC-19 | — |
| 2010-07-01 | Branco van den Boomen | Willem II/RKC Y. | Willem II/RKC-17 | — |