If Paris St-Germain pay the €222m release clause for Neymar, Barcelona are ready to push for a Financial Fair Play investigation.
The Brazil international is expected to return to Barca training on Monday, but the Spanish giants still are currently locked in a battle to hold onto the player, who continues to be linked with an exorbitant move to Ligue 1 heavyweights PSG.
Barca chief Josep Maria Bartomeu said last week that Neymar would be staying, although reports suggest PSG had triggered his release clause, and that he was due in Qatar this week for a PSG medical.
Barca and La Liga have threatened a legal response, should the sum be offered, and say they have made their intentions clear to PSG president Nasser Al-Khelaifi.
“We will [make a complaint about PSG] because they infringe Uefa’s Financial Fair Play rules and also the European Union’s competition rules,” said La Liga president Javier Tebas.
“We will make a complaint to Uefa and if they don’t do anything we will take it to the competition tribunals in Switzerland and Brussels. And, from there, we don’t rule out going through the courts in France and Spain.”
He added: “Two months ago I met the president of PSG at La Liga’s offices and I told him what we were going to do and the reasons why.
“He was angry with me and said that he did not understand. We have a relationship [through Qatar sports channel BeIn] for Spanish football, but La Liga must defend our clubs in these situations.”