Maas Willemsen from De Graafschap will be joining Heerenveen, not Sparta Rotterdam. This decision has prompted Sparta to accelerate their negotiations for another player, Van der Kaap, to ensure they do not miss out on their targets.

Maas Willemsen has signed a contract with SC Heerenveen until mid-2029. He chose to move to Heerenveen despite interest from other Eredivisie clubs, including Feyenoord, Sparta Rotterdam, and Go Ahead Eagles. De Graafschap also attempted to retain him longer. Willemsen played 38 official matches for De Graafschap and became a key player in their defense.

Maas Willemsen, a defender from De Graafschap, is attracting interest from several Eredivisie clubs, including Feyenoord and Sparta Rotterdam. SC Heerenveen seems to have the best chance of signing him, as confirmed by Voetbal International. Willemsen has an expiring contract, allowing him to transfer for free. Johan Hansma, the technical manager of De Graafschap, confirmed the concrete interest in Willemsen, stating that he has spoken with the player, but emphasized that the transfer is only final once everything is arranged.