As has been correctly pointed out, we are now at a different level, beyond our wildest dreams TBH. Therefore, if Harry does get offered the job, and leaves at the end of the season, assuming a major disaster hasn't occured, we will be in CL again, and in a real position to challenge fo the prem next year.
All this assumes that we do not lose the nucleous of our squad, and strengthen where needed.
Our next manager will need to be all things that Harry has been, and I cannot see the likes of Klinsmann and Hughton being this, despite my obvious affinity to them as former great players. After all, Hoddle was a great player !!
One way or the other, Harry and the FA need to make up their minds, and soon. Our club need to know where they stand.