UEFA chief Aleksander Ceferin has threatened to ban players in the Super League from representing their countries at World Cups and European Championships.
"The players should remain calm because the threats won't happen," Super League chairman Perez said. "But those who run the monopolies at UEFA have to be transparent. UEFA doesn't have a good image.
"They presented a [Champions League] format that no one understands, and they say in 2024 it will start. By 2024 we will be dead! There are clubs that have lost hundreds of millions."