Share buyout will 100% happen first, new stadium site will be 100% signed and sealed also, Usmanov won't take any even slight risk of leaving one mess to join another, Moshiri will have to have sorted both things out, then it's a simple matter of sell at Arsenal and buying into Blue Heaven holdings as an equal partner.
So a guestimate on timeline would be later this year to early next - maybe stretching till the summer before it falls into place.
What would a partnership mean, foremost i think it would give us not only the vision of joining the 'elite' but also the financial means to do so - on a timescale that with just Moshiri would be totally impossible, Moshiri alone can turn us into a very well ran club, can sort out the club from top to bottom, can have us competing on the pitch and financially at a level we couldn only have dreamed about a couple of years back, but theres a ceiling on that - we can reach the spurs level but to go above that - the gulf is so huge that it would take a generation or more and would need success throughout that generation on the pitch - all the whilst having 3 clubs who financially can at the flcik of a switch decide to blow the competition out the water (thats assuming nothing major happens involving Liverpool, West Ham or Spurs as well - as all 3 of those are in a situation that a takeover from an Oligarch, Sheikh or Chinese consortium would see them joining the likes of City, chelsea and United as almost untouchable to us - even with Moshiri at the helm)
In simplest terms, the club 'should' be debt free (already apparently is according to some), a new stadium that would match or eclipse those of the biggest clubs in the coountry would be in place (a riverside one would do that - and apparently is also no longer a pipe dream) - with none of that cost being past onto the club as debt, the key talent would be retained and built upon, the club itself would no longer be a jobns for friends place but with the best people in the roles that we could attract, yest again we are starting to see the signs of that, commercial dealings would be masively increased (possibly through the slightly dodgy city model of Usmanov self funding those deals) and the club would be fast tracked to the status it enjoyed under Moores time at the helm, as in one of the top teams both on and off the field.
Short term we'd see a massive sea change in the club, long term it would be unrecognizeable and after a settlign in period with the 'media' etc we'd be put on par with the way they regard Chelsea, City etc, but with a hostory that far exceeds those clubs - and a hostory that whilst largely ignored in recent times by the media world, would quickly get disted off and brought out again should the club once again join the top clubs in the country