Really?
Israel, Kazakhstan, and Azerbaijan play in UEFA competitions because they are affiliated members. It's because of this that, even though they are geographically Asian (whether fully or partially), they participate in these competitions, as I mentioned in another thread recently.... football has become an economic business these days, so than this is a political and strategic decision aimed at profiting from these competitions, not a just geographics limitation.

And I also agree wit hyou about the heavy investment of Arab nations in European football. They already have a hand in several major clubs like Manchester City (City Football Group – United Arab Emirates), PSG (Qatar Sports Investments), as well as other smaller clubs that also receive investment from them.

But, I must disagree with you that in the short and medium term, they will be participating in the Champions League. Only UEFA members participate there, and Arab countries are affiliated with the AFC (Asian Football Confederation). In order for them to participate in the UCL, they would have to change confederations... and let's face it... this is politically complex and unprecedented, as far as I know.

If you know anything concrete along these lines, that isn't just speculation, let me know and I'll change my mind.