Juventus president had been pushing for Champions League reform, with proposals to be voted on at the executive committee meeting on Monday.
But it emerged on Sunday that his club was one of 12 to have signed up to a proposal to break away and form a closed shop 'Super League'.
The brainchild of Real Madrid chief Florentino Perez, former Barcelona president Josep Bartomeu announced on his departure that the Catalans had signed up.
Manchester United, Liverpool, Manchester City, Arsenal, Chelsea and Tottenham are also on board, as are Atletico Madrid, Inter and Milan.
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