What became the dog track was also a site looked at by City. In fact I’m convinced that was the preference for years.
I appreciate that this might well have been dealt with in more detail in some of the historical City literature, most prominently your own. However, my collection of City books resides at my mum's place while I'm abroad so I'm limited in terms of access to material about this.
Anyway, I've long wondered about this, in fact since I saw someone post on Twitter (I think) some years back a scan of a newspaper report from 1913 about City supposedly planning a move to Belle Vue. But the story referenced Mount Road and not Kirkmanshulme Lane, which was always the official address of the dog track, so I thought it was probably a different site.
Looking now at Google Maps, I see that the dog track nestles between Mount Road and Kirkmanshulme Lane. Based on what you say, I assume it actually is that site. I remember that we had a previous exchange about why they eventually disregarded this option, which I've not managed to find searching back through my posts on here (maybe it was on Twitter). I seem to recall you suggested that the maximum capacity would have been around 70K, and the club wanted more.
It always struck me that, while many Blues today regard Maine Road as a spiritual home, it must have been a hell of a shock for fans in the early 1920s to find we were uprooting to move to Moss Side. If there'd been a forum back then that allowed for such an easy exchange of views as this one does now, I bet it would have been inundated with postings of absolute disgust!