UEFA has strongly pushed back against a FIFA proposal that would open the door to as much as $10 billion in private investment tied to the World Cup. The European governing body described the idea as a boundary football authorities should not cross and argued that the tournament is not something FIFA should be able to sell in parts.

The dispute centers on the role of private capital in one of the sport's biggest global events. Based on the proposal outlined in reports, the plan would allow outside investors to take stakes connected to the World Cup, a move UEFA views as fundamentally different from normal commercial partnerships or sponsorship arrangements.

UEFA's objection highlights a wider debate about who controls football's most valuable competitions and how far governing bodies should go in monetizing them. By saying the World Cup is "not FIFA's to sell," UEFA signaled concern not only about the financial structure of the idea but also about the principle behind it.

The sharp response sets up another point of tension between two of football's most powerful institutions. While FIFA appears to be exploring new ways to unlock value from the World Cup, UEFA has made clear it sees private ownership-style involvement in the tournament as unacceptable.