Maybe it's me but if I was a Chelsea or Manchester City fan I would not be happy with flight in bussed to ground and flight out straight after
Part of the fun with away trips either domestically or internationally is having a session before and win or lose after. and good natured banter with the locals
and certainly if there was a restricted ballot where you could not guarantee being with your mates
Watch it at home in the supporters clubs would be the best way. Or even large screen at Stamford Bridge and the Etihad.
If there us a non EU citizen restriction don't see how they could justify letting in 12000 uk citizens