UEFA has begun disciplinary proceedings against European giants Barcelona, Real Madrid and Juventus over their role in the collapsed Super League. (More Football News)
The announcement from European football's governing body could result in heavy punishments for Spanish titans Barca and Madrid and Italian heavyweights Juventus.
UEFA said in a statement: "Following an investigation conducted by UEFA ethics and disciplinary inspectors in connection with the so-called 'Super League' project, disciplinary proceedings have been opened against Real Madrid CF, FC Barcelona and Juventus FC for a potential violation of UEFA's legal framework.
"Further information will be made available in due course."
Juve chairman Andrea Agnelli has been seen as a driving force behind the organisation of the tournament, which was announced on April 18 but fell apart just 48 hours later when the six English teams that had entered all withdrew.
The proposed competition guaranteed participation for the 12 founding teams.
But the anti-competitive tournament prompted outrage around the football world, and pressure from fans, players, coaches, governing bodies, governments and the media soon told.
Once the Premier League clubs – Manchester United, Manchester City, Liverpool, Arsenal, Tottenham and Chelsea – pulled out, it was clear the project would not be viable.
Milan, Inter and Atletico Madrid soon followed.
However, there has been reluctance from Juve, Barca and Madrid to let the Super League die.
Amid urging from UEFA and others to back away from the project, those clubs collaborated on May 8 to defend their actions.
The three clubs stated: "The founding clubs have suffered, and continue to suffer, unacceptable third-party pressures, threats, and offences to abandon the project and therefore desist from their right and duty to provide solutions to the football ecosystem via concrete proposals and constructive dialogue.
"This is intolerable under the rule of law and tribunals have already ruled in favour of the Super League proposal, ordering FIFA and UEFA to, either directly or through their affiliated bodies, refrain from taking any action which may hinder this initiative in any way while court proceedings are pending."
They stressed that "structural reforms are vital to ensure our sport remains appealing and survives in the long-term."
Madrid, Barca and Juve claim the Super League provided "a unique opportunity to offer fans around the world the best possible show and to reinforce global interest in the sport".