UEFA has formally warned FIFA president Gianni Infantino that it is considering legal action over the governing body's failed FIFA Forward Enterprise (FFE) proposal, escalating the fallout from a plan that sought to introduce private investment into FIFA's flagship competitions, including the men's and women's World Cups.

FIFA's $4.2 billion plan to sell World Cup commercial rights to private investors faces mounting opposition as a key adviser resigns and UEFA

Gianni Infantino's plans to sell stakes in the World Cup and other FIFA tournaments were met with strong backlash.