The Madrid-based team complained at FIFA's headquarters due to the approaches made by Los Blaugranas to sign their French star.

Atlético Madrid's boss may have stated that Antoine Griezmann can leave the club whenever he wants, but that didn't mean that all teams could approach to the player with the intention to sign him.

Today, Los Colchoneros stepped up and filed a complaint against Barcelona at FIFA's headquarters in regards to Los Blaugranas' attempts to sign the striker. That wouldn't be illegal if the player had less than six months left in his contract, but he recently extended his deal with Los Colchoneros until the end of the 2021-22 season.

According to the Madrid-based side, Barcelona's president Josep Maria Bartomeu has held talks with Griezmann's inner circle to lure the player away from Los Colchoneros. Their best evidence of those talks is an interview with Guillermo Amor, one of Barcelona's execs, where he reveals Bartomeu's contacts with Griezmann's family.

Atlético added that Barcelona is trying to destabilize them in order to prevent the red-and-white team to overtake Los Blaugranas in the La Liga title race. As of now, Diego Simeone's men are six points behind Barcelona.

If FIFA considers the evidence as a breach of their transfer rules, Barcelona could face several penalties, which could go from a fine to even being banned from signing in one or two transfer windows.