Marble have three bars - the Mable Arch in Ancoats, 57 Thomas Street in the Northern Quarter and Marble beer house in Chorlton. They're all good but I probably prefer the first two. Marble Arch is just a great old pub and 57 is probably best for satisfying beer nerd cravings for trying as much as possible.
You're probably best off trying to stay round Ancoats if possible. No more than a 20 minute brisk walk from City, Cloudwater, Port Street, Piccadilly tap and probably a few brew taps.
From memory, Port Street and Marble are no football colours.