According to Mundo Deportivo, the European Super League plan would run from 2022-23 with fixed places for Juventus, Milan and Inter.
Barcelona President Josep Maria Bartomeu announced he had pledged their participation in the new tournament during the press conference where he tended his resignation.
This sparked an investigation into what plan had been discussed with Barcelona and other top European clubs.
Mundo Deportivo maintain it was rushed through due to the COVID-19 pandemic, so could start from the 2022-23 season.
It would be a 34-game league with play-offs in the style of Euroleague basketball.
Most clubs would have a fixed place in the Super League, leaving some room for promotion and relegation.
It’s reported there would always be at least five English clubs from the list of Liverpool, Manchester United, Manchester City, Chelsea, Arsenal and Tottenham Hotspur.
There would be three Italians – Juventus, Inter and Milan – two German clubs in Bayern Munich and Borussia Dortmund, plus two from France including PSG.