A planned breakaway Super League announced by 12 of European football’s top clubs and backed by US investment bank JPMorgan was condemned by fans and federations across the continent on Monday, with UEFA set to hold crisis talks over the threat posed to its flagship events.

Six Premier League teams—Liverpool, Manchester United, Arsenal, Chelsea, Manchester City and Tottenham Hotspur—joined forces with Spanish giants Real Madrid, Barcelona and Atletico Madrid and Italian trio Juventus, Inter Milan and AC Milan to launch the planned competition. A joint statement said three more clubs would be invited to join the founding members before the start of the competition “as soon as possible”. Organisers have also filed a motion “before the relevant courts” to “ensure the seamless establishment and operation” of the Super League, according to a letter seen by AFP and addressed to UEFA president Aleksander Ceferin as well as FIFA chief Gianni Infantino.