Utrecht are taking Swansea to the Court of Arbitration for Sport (CAS) over the transfer of Michel Vorm to Tottenham.
Ajax extended their gap at the top of the Eredivisie after winning 2-0 at PEC Zwolle on Sunday.
Michiel Kramer scored a hat-trick as Feyenoord won the Rotterdam derby 4-2 at Excelsior to move level with leaders Ajax,
Feyenoord moved up to second in the Eredivisie with a 5-1 thrashing of FC Twente at De Kuip.
Davy Klaassen scored twice as Ajax Amsterdam trounced SC Cambuur 5-1 to extend their lead at the top of the Eredivisie.
Johan Cruyff is "convinced" he will win his fight against lung cancer after undergoing a first bout of chemotherapy.
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