Hearts have signed Dutch midfielder Kenny Anderson from RKC Waalwijk for a nominal fee.
NEC Nijmegen were relegated from the Eredivisie after defeat to Sparta Rotterdam in the promotion/relegation play-offs.
Alireza Jahanbakhsh was NEC Nijmegen's hero with a two-goal haul helping to beat Ajax, condemning Roda JC to the drop.
Ajax clinched their fourth successive Eredivisie title with a 1-1 draw against Heracles Almelo on Sunday.
Ajax will have to wait to get their hands on the Eredivisie trophy after Feyenoord matched their victory on Sunday.
Ajax still have work to do to wrap up their Eredivisie title defence following a 1-1 draw at Vitesse.
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