Chelsea winger Charly Musonda has returned to Dutch side Vitesse for a second season-long loan.
Ajax moved three points clear at the top of the Eredivisie table after a 4-2 home win against Vitesse Arnhem.
Ajax edged three points ahead of PSV Eindhoven in the Eredivisie title race with a hard-fought 1-0 win at FC Groningen.
PSV Eindhoven's Eredivisie title chances were dealt a blow as they had to settle for a 3-3 draw away at 10-man Vitesse.
Ajax closed the gap on Eredivisie leaders PSV Eindhoven to two points after recording a thumping 5-1 victory at ADO Den Haag.
PSV battled back to snatch a 2-2 at Heerenveen thanks to Donyell Malen's goal in the fifth minute of stoppage time.
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