It would be the strongest sanction available to UEFA with the clubs, who are all usual fixtures in the competitions, barred from taking part.
While this sanction is believed to be used to pressure Real Madrid, Barcelona, Juventus and AC Milan to also pull out of the Super League, it could still be used on the clubs who do not officially withdraw.
The four aforementioned clubs continue to remain in the breakaway competition, seeing their position as strong enough to escape any punishment.
But UEFA are aiming to see as many clubs as possible withdraw and can point to Article 51 of their statutes in order to back up any punishment.
The article states: “No combinations or alliances between… clubs affiliated, directly or indirectly, to different UEFA Member Associations may be formed without the permission of UEFA.”