According to a report to the Council Executive last June, it was "the former Hall & Rogers building at the junction of Ashton New Road and Hillkirk Street" (that may be the same site as you're talking about - I have no idea). However, Manchester Phoenix, who were going to play there, seem to have folded: https://www.manchesterphoenix.co.uk/news/2854/phoenix-statement. Not sure that the venture will be viable without them (or might Manchester Storm be tempted from Altrincham?). I don't think the plan was ever to have ice hockey hosted at any arena on the collar site. However, there was talk of such an arena hosting international basketball games as well as becoming a home for the Manchester Giants. IIRC, under the Eastlands Community Plan dated 2012, the hope was to make the area around the Campus home to various sports governing bodies, of which basketball was one. I suspect the plan might bbe that, if they build the arena/conference venue, that - coupled with the recently mooted sports university and the ADUG/Council home building joint venture - there'll then be the prospect of large numbers of people in and around the campus on a daily basis. And that will then help to attract a partner for the development of the rest of the collar site.