A dispute is unfolding between two major football clubs. The Atlético de Madrid is taking action against the Barcelona. The club's decision comes after an issue arose involving the Argentine forward Julián Alvarez.

Further details about the situation are available from El País. The Atlético de Madrid will be filing a complaint with the FIFA regarding the matter. The complaint is specifically related to the Barcelona's actions concerning Julián Alvarez.

For more information, readers can refer to the original source.