The Union of European Football Associations has slammed nine of the 12 European clubs who participated in the ill-fated with a penalty.
The nine clubs include Arsenal, Chelsea, Liverpool, Manchester City, Manchester United, Tottenham Hotspur, AC Milan, Inter Milan and Atletico Madrid.
Real Madrid, Juventus and Barcelona are not included in the list because they are yet to pull out from the breakaway league and BBC reported that they are set to face "appropriate action" under UEFA's disciplinary process.
However, the nine clubs, according to UEFA will have five per cent of UEFA competition revenues withheld for one season, starting in 2023-24, and this money will be redistributed, including in the United Kingdom.
All nine clubs have also agreed to make a combined 15m euros (£13.4m) goodwill contribution to benefit children and grassroots football across Europe.
While the clubs would rejoin the influential lobbying group the, UEFA has warned that any attempt made to join any unauthorised competition in the future would attract fines of 100m euros (£86.9m or ₦46.2bn – according to data from Morningstar for Currency and Coinbase for Cryptocurrency) each.
The governing body added that if they breach any other terms of the declaration, they would be fined half the 100m euros penalty.
UEFA president, Aleksander Ceferin said: "I said at the Uefa congress two weeks ago that it takes a strong organisation to admit making a mistake, especially in these days of trial by social media. These clubs have done just that.
"In accepting their commitments and willingness to repair the disruption they caused, Uefa wants to put this chapter behind it and move forward in a positive spirit.
"These clubs recognised their mistakes quickly and have taken action to demonstrate their contrition and future commitment to European football.
"The same cannot be said for the clubs that remain involved in the so-called Super League and Uefa will deal with those clubs subsequently," he said.