I would think football with supporters is a long way off, but sport without fans is maybe only a few months off I think. I think the government are aware of how entrenched sport is in people's psyche and how many people rely on it for enjoyment. Giving people things to focus on and enjoy is just as important as any other measures in my opinion. If people are constantly seeing things they like being taken away and nothing being put back on I think you could quickly see disillusionment, that's likely to just defeat the purpose of what you're trying to do.
The rest of this season and then next season (or at least most of it) quite probably will be behind closed doors or restricted to two meter social distancing which isn't really feasible beyond the Etihad stadium.
They'll try and get this season back underway behind closed doors within a couple of months. At least there's a chance now the government have finally started to act.
Right now football and sport doesn't matter and it's all cancelled. But a couple of months of practical lockdown and everyone will be climbing the walls and in need of light relief.
The two main issues, particularly the first thing:
1) Players will continue to catch the virus/symptoms of the virus - forcing often mass self-isolation and quarantine - and you obviously can't adhere to social distancing playing a game of football. How can they get around that? At some point they'll have to decide to just play on (or they'll just have to cancel football altogether until the vaccine) but it's how soon that decision is reached.
2) If matches are behind closed doors (which they'll have to be for the forseeable) then the safety advice will be against football going ahead IF the pubs are back open. When the pubs do re-open they'll presumably have to adhere to social distancing. If Liverpool are playing for the title, or it's Merseyside derby, then that's not going to happen.