The six English clubs involved have now withdrawn.
That though doesn't seem to be something the Real Madrid president is particularly worried about and as two of its founding members looks ready to withdraw.
"No," Perez told L'Equipe when asked if he was worried about clubs leaving the Super League. "The situation is serious and everyone is in agreement to carry on with the project and seek a solution. No one is under pressure.
"I am convinced that Bayern Munich and PSG will join us in the end, but we have not yet spoken to them. Teams like Lens will also be able to access [the Super League] and they will be able to sell their players to the best clubs, something they can no longer do because of the crisis.
"You have to realise that what's happening now is like what happened in 2008 with the financial crash."