We probably don't see it as a big deal in Manchester. We have a large gay community, an area called the gay village and are generally accepting people. Other parts of the UK however I can't speak for.
I'd like to think he wouldn't get any stick from anyone, but a lot of fans will probably be fine with it until the player dives or scores against them, then it will come out (excuse the pun). Embarrassing.
As for people suggesting Chris Smalling, he had sex with my girlfriends flatmate (a woman) a few years ago so make of that what you will. I don't want to get drawn into the speculation.