You know that for certain? As far as I can see, there is a definite push from most football clubs to go mobile ticketing, so they need to drive (i.e force) punters into it, because if you advertise the fact that they can still do plastic cards, then there'll be lots who want one. Maybe City are seeing what sort of pushback happens before deciding if they can offer a plastic card solution. I think if they do, it will be combined with ID requirement and even possibly dedicated turnstiles, because the aim of this push seems to be to combat ticket touting, but I also think it could be linked to suggestions from security experts on the back of the arena bombing inquest, it just seems too much of a coincidence that the clubs are all making these changes now.