Yes, I'd go along with this if strictly looking at the council boundaries, at least traditionally speaking.
Something like Chorlton and south of there more red. When you start going out towards Stockport, (East Didsbury/Burnage) it swings more blue.
Whalley Range and Rusholme quite a large Asian population and at one point people from that community weren't as obviously into football as much as others. Not when I was growing up, changing now.
A lot of students in Fallowfield who could be from anywhere and support anyone. Hulme has gone a bit studenty in recent times too and a lot of city centre workers moving in with gentrification happening. People from everywhere supporting whoever there too. The western edges of Hulme or Moss Side perhaps a bit more red at one point moving closer to Old Trafford, the closer to Maine Road more blue.
The rest of the north and east a lot more pockets of blue.
Expand it out to Greater Manchester and would say red as well, quite easily when it comes to total numbers.