FIFA is threatening to ban players from participating in the World Cup if they also play in a breakaway European Super League.

Both FIFA and UEFA are opposed to the proposed European Super League.

"Either you are in or you are out," Gianni Infantino said, listing the World Cup, European Championship and national leagues as competitions that players from breakaway teams could be excluded from. "This includes everything."

FIFA is proposing a Club World Cup project that would be played every four years.

"The Club World Cup is the answer to any attempt to think even about any sort of breakaway leagues," he said.

UEFA vows to fight against the idea of a European Super League.

The league would have 11 founding members: Manchester United, Manchester City, Chelsea, Arsenal, Liverpool, Real Madrid, Barcelona, Paris Saint-Germain, Juventus and Bayern Munich.

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," UEFA president Aleksander Ceferin told 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."