Sir Dave Richards told ESPNsoccernet on Thursday that the combined forces of all the European Leagues and clubs are calling for 50% of the executive board seats on UEFA.
Richards is the Premier League chairman as well as the chairman of the European Professional Football Leagues (EPFL), and a driving force behind what is rapidly becoming an influential body in world football affairs, together with Karl Heinz Rummenigge and the European Club Association (ECA).
Their joint declaration of intent has been put to the 53 UEFA associations meeting in Poland this week and Europe's associations are determined to make their voices heard.
Richards told ESPNsoccernet: "Karl Heinz Rummenigge has told UEFA that the clubs want 50% of the seats on the main executive board and the European leagues. The clubs have called for this major and significant change, and the leagues are supporting it. We speak together.
"We simply want the game run properly in UEFA and indeed FIFA. That is all we are asking and the leagues and the clubs are united in wanting 50% of the executive board member seats so we can play a part in the decision-making process.
"UEFA are meeting on Tuesday and Wednesday so we are awaiting the decision of the 53 associations."
As ESPNsoccernet revealed last week, UEFA owns the Champions League brand but the leagues and clubs own the rights. The future shape of European football now hinges on UEFA's decision.