Isn’t UEFA , like FIFA and CAS, based in Switerland a non EU country ?
I think UEFA like FIFA is mindful of EU law but don’t think it comes under EU Jurisdiction as such but the ultimate legal jurisdiction all the non domestic associations fall under is Swiss Law.
Other than the over arching rules in football such as the laws of the game and regulations around player contracts domestic associations have their own laws/ rules that have to comply with the law of the land within the jurisdiction in which they operate.
Its frustrating as hell not to know what’s going on re matters such as Everton’s and yes Chelsea’s but the PL are dammed if they do and dammed if they don’t when putting information out there.