La Liga management has sent a letter to the Spanish Footballers' Association (AFE) warning about the possible consequences of player protests in the championship.
Idman.Biz reports this with reference to "AS".
The protests are against holding the Villarreal - Barcelona match in the USA.
According to the Spanish publication, union representatives claim they are not afraid of the warning because the players' actions do not violate any legal provisions.
However, the team captains assessed the officials' letter as pressure on the AFE. In addition, they were outraged by the league's censorship because the players' protest was not shown on television broadcasts.