La Liga is considering legal action after the postponed El Clasico between Barcelona and Real Madrid was rescheduled for 18 December by the Spanish Football Federation (RFEF).
The match was set for 12:00 BST on Saturday in Barcelona but was postponed at La Liga’s request due to fears of civil unrest.
There was a week of protests in Barcelona after nine Catalan separatist leaders were jailed earlier this month.
La Liga had proposed 4 December.
Both clubs put forward Wednesday, 18 December after being asked to agree on a new date by RFEF’s competitions committee, who signed off the decision on Wednesday.
The first round of the Copa del Rey is set to take place on the same date.