Twelve major clubs from England, Italy and Spain on Sunday announced plans to create and govern their own European competition, sparking wide condemnation from football authorities.
The renegade clubs will be guaranteed places in the new competition, in contrast to the Champions League, which requires teams to qualify via their domestic leagues.
Prince William, President of the English Football Association, was among those who criticised the plan, saying he shared the concerns of fans.
"Now, more than ever, we must protect the entire football community – from the top level to the grassroots – and the values of competition and fairness at its core," he wrote on Twitter.
"I share the concerns of fans about the proposed Super League and the damage it risks causing to the game we love," added the tweet which was signed "W", meaning it had come from the prince himself.
Furious soccer fans condemned the move as a "greedy" power grab, with many worrying it would hurt the spirit of the game.
"I think it is more despicable, it is more of a greedy power grab than we ever expected, and they claim that they do it in interest of football," said Ronan Evain, executive director of Football Supporters Europe.
Supporters of the six Premier League sides to join the Super League took part in protests across England.
With Liverpool in action at Leeds on Monday night, fans of both clubs gathered outside Elland Road before kick-off, while a plane flew overhead with a banner reading "Say No To Super League".
At Manchester United's Old Trafford stadium, supporters displayed a banner reading "Created by the poor, stolen by the rich".
At Liverpool's Anfield stafium, banners called for the removal of American ownership group FSG and others declared "LFC RIP - 1892-2021", while a fan arrived at Tottenham's training ground with a placard reading "Say No To Super League".
Several players have rejected the idea, including Paris St-Germain midfielder Ander Herrera, whose French club are not among the 12 founding members.
"I fell in love with popular football, with the football of the fans, with the dream of seeing the team of my heart compete against the greatest," the ex-Manchester United player tweeted.
"If this European Super League advances, those dreams are over, the illusions of the fans of the teams that are not giants of being able to win on the field competing in the best competitions will end.
"I love football and I cannot remain silent about this. I believe in an improved Champions League, but not in the rich stealing what the people created, which is nothing other than the most beautiful sport on the planet."
Former Real Madrid, Barcelona and Inter Milan midfielder Luis Figo, whose former clubs have all signed up to the Super League, was equally scathing.
"This greedy and callous move would spell disaster for our grassroots, for women's football, and the wider football community only to serve self-interested owners, who stopped caring about their fans long ago, and complete disregard for sporting merit. Tragic," he wrote on Twitter.
Zenit St Petersburg's former Liverpool defender Dejan Lovren and Fenerbahce's ex-Arsenal and Germany midfielder Mesut Ozil also criticised the idea.
Reuters/PA via AAP.