Barcelona's women's team manager Lluis Cortes and forward Andressa Alves have alleged racist abuse from a Rayo Vallecano player following Alves' sending off on Sunday, a claim Rayo have strongly denied.
Alves was shown a red card in the second half after reacting aggressively to a foul by Sheila Garcia, with several players having to hold her back.
Speaking after the game, Cortes claimed Alves had reacted as she did because she had been subjected to racist abuse by the Rayo player.
Rayo Vallecano's Vallecas stadium will be closed until at least mid-October because of safety concerns regarding renovation work, it was agreed at a meeting between the community of Madrid, La Liga and the club on Monday.
The match between Rayo and Athletic Bilbao, scheduled for Saturday, has been postponed and the games against Alaves and Espanyol are at risk too.
Options being discussed include reversing the fixtures so Rayo play away, or holding them behind closed doors.