With the way money is talking more and more, dont rule out franchising, the way it happens in the USA.
Read what the Juventus chairman said in the 1980's or 90's when he was getting stick from the fans. He took Juventus on the road, filling stadiums in Milan, Napoli and all over Italy, as their fan base is like United's.
Surely that disproves the very point you were trying to make? That it would happen simply because of new out of town owners?
Imo if a club did that, they would very quickly notice a drop off in support. Unless it's a league decision.