Top clubs will play in a world super league "in a few years," according to European Professional Football Leagues (EFPL) board member Jacco Swart.
The idea of a European super league is one that has been floated in the past, but it has been met with strong opposition amid fears that domestic competitions and smaller sides could suffer as more power is handed to the sport's heavyweights.
This week, European clubs leader Karl-Heinz Rummenigge said talks are planned with UEFA that should block a breakaway super league until 2024.
But Swart has said in the Daily Mirror "We will see a worldwide football competition in a few years. That is a development which nobody can stop anymore.
"It will be an exclusive party for the happy few -- for the biggest football brands in the world."
The Daily Mirror reports a world super league could include sides from China, the United States, Brazil, Australia and South Africa.
The newspaper says domestic leagues would continue as the global competition could adopt a Champions League-style format.
Swart added: "This new super league will be driven by TV markets, huge sponsors, branding and marketing all over the world. And not by real football factors.
"The traditional football formats will be snowed under. What it will mean exactly for the biggest football leagues in the world, the Premier League, La Liga [Spain] and the Bundesliga [Germany], I don't know yet.
"It may sound weird, but for them it is a bigger threat than for us [the other leagues in Europe]. For their leagues there are billions at stake, for us millions."
On Thursday, the EPFL angrily rejected UEFA's reforms of the Champions League and Europa League which were announced last month.
UEFA gave four guaranteed Champions League group-stage places to the top four leagues -- the Bundesliga, La Liga, the Premier League and Serie A -- and redistributed the prize money to better reward historic success in European football.