UEFA president Aleksander Ceferin has condemned Barcelona, Real Madrid and Juventus amid reports they are planning to resurrect their European Super League plans "in the middle of a war."

Ceferin said he is "sick and tired" of addressing the idea of a "nonsense" breakaway league and accused the rebel clubs of plotting against UEFA at a time of crisis in Europe amid the ongoing Russian invasion of Ukraine.

"I'm sick and tired of speaking of this non-football project," Ceferin told the Financial Times Business of Football Summit in London via video link Thursday.

"Look, first they launched their nonsense of an idea in the middle of a pandemic; now we're reading articles every day that they are planning to launch another idea now in the middle of a war.

"Do I have to speak more about those people? They obviously live in a parallel world.