UEFA president Aleksander Ceferin has aimed another swipe at the three Super League clubs - as he refused to even speak their names.
Last year saw a group of 12 clubs form their own competition to rival the Champions League but it soon fell through after backlash from fans.
Of the founding clubs nine have publicly pulled out - though a Spanish court found they have not legally withdrawn - but Juventus, Real Madrid and Barcelona remain involved.
They won an injunction from a Spanish court to prevent punitive measures from UEFA, and will take their case to the European Court of Justice as they argue that the governing body is an illegal monopoly.
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