La Liga wants the Spanish Football Association to punish Espanyol with a partial stadium closure after Athletic Bilbao forward Inaki Williams said he was racially abused at their ground.
After the 1-1 draw on Saturday, Williams, 25, said: “No black player or any player ever wants to hear that.”
La Liga is attempting to identify the fans involved and bring criminal charges of hate crimes against them.
The Spanish FA is scheduled to discuss the issue at a meeting on Wednesday.