I avoid Italy because of the transfer rules of only 2 non-EU signings per season. This Brexit scenario sounds like something I'd rather not deal with.
Though perhaps on the flip side to that, I enjoyed Russia even though the have a rule where you have to have 4 Russians on the pitch at all times. Which meant improving the youth system and creating WC Russians. Which I did and when I left, Promptly signed them for my new club.
Looking forward to managing Dinamo Moscow back to the top flight.