That feels pretty unlikely to be honest. I don't see that Short would have made his statements of putting money in and sacking Coleman if they didn't think it was pretty much a done deal. It's possible of course but I'd say highly unlikely.
Tweet from ALS:SAFC Fanzine So Short, Donald, Bain & Co leave EFL without finalising a deal. Next 24 hours is critical in terms tying loose ends to make this work and satisfy demands of @EFL
Why would Ellis Short fly all the way over here if it was all off? I think he has come over here to officially sign the club over to Stewart Donald. Out with the old and in with the new.