A statement from FIFA and from the six continental confederations has been released and it comes as a major blow to the Super League plans that have been rumbling in the background for some time.
FIFA have said that any players taking part in such a competition would be unable to represent their national teams at major tournaments.
The statement was signed by FIFA president Gianni Infantino, UEFA president Aleksander Ceferin, AFC president Shaikh Salman bin Ebrahim Al Khalifa, CAF president Constant Omari, CONCACAF president Vittorio Montagliani, CONMEBOL president Alejandro Dominguez and OFC president Lambert Maltock.
"In light of recent media speculation about the creation of a closed European 'Super League' by some European clubs, FIFA and the six confederations once again would like to reiterate and strongly emphasise that such a competition would not be recognised by either FIFA or the respective confederation," the statement started.
"Any club or player involved in such a competition would, as a consequence, not be allowed to participate in any competition organised by FIFA or their respective confederation.
"As per the FIFA and confederations statutes, all competitions should be organised or recognised by the relevant body at their respective level, by FIFA at the global level and by the confederations at the continental level.
"In this respect, the confederations recognise the FIFA Club World Cup, in its current and new format, as the only worldwide club competition while FIFA recognises the club competitions organised by the confederations as the only club continental competitions.
"The universal principles of sporting merit, solidarity, promotion and relegation, and subsidiarity are the foundation of the football pyramid that ensures football's global success and are, as such, enshrined in the FIFA and confederation statutes.
"Football has a long and successful history thanks to these principles.
"Participation in global and continental competitions should always be won on the pitch."