The Italian Football Federation has issued a stern warning to Juventus that they will be expelled from Serie A if they do not pull out of the European Super League (ESL).
Read: Real President Makes Big Super League Claim
Juve are one of only three teams remaining in the planned breakaway, with FC Barcelona and Real Madrid the other two clubs.
The trio are already at risk of being sanctioned by European football governing body UEFA, and now face further punishment closer to home should they not quit the ESL.
"The rules are clear. If a club is still part of the Super League project, they can't play in Serie A," Italian Football Federation president Gabriele Gravina said, per The Sun.
"It would be sad for the fans, but the rules are the same for everyone."
Speaking to RAI's Radio Anch'io Sport, he added: "Those who don't respect the principles to which they must be inspired.
"They are simple principles, affirmed by the Olympic Charter and then reported by the statutes of national and international federations.
"They are clear principles, in which the exclusivity of sport management is established. I hope that this dispute can be resolved as soon as possible.
"We are all a bit tired of this tug-of-war between UEFA and these three clubs. I hope to be able to mediate between Juventus and UEFA."
How much are the Super League founding club owners worth? Find out below!
Take our Champions League quiz and stand a chance to win a shirt signed by Cesc Fabregas!