Ajax captain Niklas Moisander will join Italian side Sampdoria as a free agent in the summer.
PSV Eindhoven suffered a bump on the road to a probable Eredivisie title as they lost 2-1 at Feyenoord on Sunday.
Defender Nicolas Isimat-Mirin scored a rare goal to hand leaders PSV a nervy 2-1 home win over Groningen.
Heerenveen's Mark Uth produced one of the misses of the season during Sunday's Eredivisie clash with Ajax.
Wolfsburg, holders Sevilla and Napoli look on course for the Europa League quarter-finals after last-16 victories.
Ajax staged a late rally to beat PSV Eindhoven 3-1 on Sunday to give their faint title hopes a boost.
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