FC Twente say they will fight any attempts to relegate them to the second tier of Dutch football in a dispute over financial irregularities.
FC Twente face relegation to the second-tier Jupiler League for misleading football authorities about their finances.
PSV Eindhoven retained the Eredivisie title after a dramatic final day that saw Ajax slip up when it mattered most.
Ajax moved a step closer to reclaiming the Eredivisie title on Sunday with a thumping 4-0 win over FC Twente.
Ajax have returned to the top of the Eredivisie table after winning 2-0 away at Heerenveen.
Substitute Piotr Parzyszek snatched a late equaliser to earn De Graafschap a 1-1 Eredivisie draw at home to FC Twente.
Feyenoord tightened their grip on third place and a Europa League qualification spot with a 1-0 win at FC Twente.
Marko van Ginkel scored twice as PSV returned to the top of the Eredivisie table with a 4-2 win at AZ Alkmaar on Saturday.
Twente, Santos, St Truiden and Sevilla have been fined by FIFA for breaching third-party rules.
Ajax won 2-0 at PSV Eindhoven to climb above their rivals to the top of the Eredivsie table on Sunday.
Eredivisie leaders PSV Eindhoven were held to a frustrating 1-1 draw by Heerenveen at Philips Stadion on Saturday.
Eredivisie leaders PSV Eindhoven coasted to an eighth straight win to open up a four-point advantage over Ajax.
AZ Alkmaar climbed up to fourth in the Eredivisie after beating Heracles 6-2 to maintain their perfect start to 2016.
FC Twente came from behind to beat 10-man Heerenveen 3-1 in the Eredivisie on Saturday, as AZ and Heracles also won.
PSV Eindhoven cut the gap on Eredivisie leaders Ajax to a single point with a 3-1 win at Excelsior.
PSV closed the gap to Ajax at the top with a 4-2 win over Twente, while AZ Alkmaar beat Feyenoord on Sunday in Eredivisie.
Ajax extended their gap at the top of the Eredivisie with a narrow 1-0 victory at home to Vitesse on Saturday.
FC Twente have been banned from European competition and threatened to have their playing licence permanently revoked.
PSV missed the chance to close the gap on Ajax at the top of the Eredivisie as they drew 1-1 at home to Roda JC.
Ajax put five past Heerenveen while PSV Eindhoven moved into second place in the Eredivisie with victory at Vitesse.