The Premier League voiced "significant concerns" over potential reforms to the Champions League on Friday, saying the changes would damage the thriving domestic game.
Reported reforms being put forward for further discussion include changing the current group stage from eight groups of four to four groups of eight, guaranteeing clubs far more Champions League games from 2024.
A tiered system involving relegation and promotion could see the top six teams of each group automatically qualify for the following year's competition rather than through their domestic leagues, while UEFA president Aleksander Ceferin denied reports games could be played at weekends.
"All 20 Premier League clubs today discussed their 'significant concerns' regarding reported proposals for changing the format and qualification criteria of UEFA club competitions from season 2024/25," the Premier League said in a statement.
"All clubs unanimously agreed it is inappropriate for European football bodies to create plans that would alter the structures, calendar and competitiveness of the domestic game and will work together to protect the Premier League."
"Millions of fans attend matches across the country, with allegiances and local rivalries often passed down through generations. We have a fantastic combination of competitive football and committed fans that we will vigorously defend."
Disclaimer: No Business Standard Journalist was involved in creation of this content