Earlier on Tuesday, the Premier League announced that all 20 clubs had agreed to block their players travelling to countries on the United Kingdom's red list amid concerns over enforced quarantine periods on their return.
The majority of countries in South and Central America are on the UK's red list, while the Premier League also confirmed it had aired its frustration with FIFA over the decision to extend the CONMEBOL international window from nine days to 11.
Similarly, LaLiga has now hit out at world football's governing body, insisting it would fully back clubs who choose not to release South American internationals for this reason, while also taking into account concerns over coronavirus.
"In relation to the serious unilateral decision by FIFA to increase by two days, from nine to 11 days in both September and October, the international FIFA period for the CONMEBOL confederation, without addressing other solutions that were raised in the World Leagues Forum, LaLiga wants to communicate that it will support in all areas the decision of the Spanish clubs not to release their players belonging to the national teams for the convocation of CONMEBOL, and will take the pertinent legal actions against this decision that affects the integrity of the competition by not allowing the availability of the players," a statement read.
The statement went on to declare that 25 players from 13 LaLiga clubs had already been called up by South American nations, with the squads for Ecuador and Venezuela still to be announced.
"The Spanish association understands that the world calendar cannot and should not be modified in this way, especially when there are alternative solutions," LaLiga's statement continued.
"LaLiga, through the World Leagues Forum, has already expressed its discomfort in this situation and in the absence of sensitivity towards the clubs, on an issue, such as the international calendar, which is set and agreed four years in advance and to which the national leagues have already adapted taking into account the circumstances of the COVID, but always in a way agreed between all the parties involved.
"LaLiga will summon the affected clubs for a meeting in the coming days."