The latest batch of Football Leaks stories released by German magazine Der Spiegel claimed on Friday that plans for a European Super League with 11 founding members: Manchester United, Manchester City, Chelsea, Arsenal, Liverpool, Real Madrid, Barcelona, Paris Saint-Germain, Juventus and Bayern Munich remain intact, ESPN reported.
The report added that, from as early as November 2018, the 11 teams could sign a "binding team sheet" and commit to the new European Super League from 2021.
"It would damage football worldwide," Ceferin told German sport magazine kicker. "It would be boring.
"To see Juve vs. Bayern every week would be more boring than let's say Juve vs. Torino. It's no question for me that I will fight and do all I can against such a league for as long as I am here.
"If we are talking about a closed system, we can forget about solidarity and the development of football. In the long run, the clubs would be the losers."
Bayern CEO Karl-Heinz Rummenigge, meanwhile, rejected reports of the club's push for such a league.
"I am not aware of any Super League news," he was quoted as saying by kicker.
"We neither have any knowledge about this nor have we participated in any talks. That's out of the question for us."