Like Pete says, the former Co-op on Elder way has too many problems beneath floor level. If no-one takes it on & remedies these problems,which will cost someone a small fortune, it will only get worse. If it's left derelict indefinitely what chance has the council to do but demolish it before it becomes a public danger?
As for the Chesterfield Hotel - I can't see anyone taking that over either, unless it's converted into flats. Architects & Builders do this all the time & it would be close to the canal basin regeneration project - who knows?