I'll have to update my position that the rebuild ends in two years. My previous take being: we have the Russian invasion next season and after one year of gelling we attack. It'll take longer I fear.
The rebuild will end when we are ridden of the three contracts, that is MS, BS and the King. When these are off the books, we are safe from immovable contracts and left with a minimal Dan Girardy buy-out.
Starting with the 2021-22 season we should have Breadman, loads of new talented prospects, Lias, Chytil, Howden and Co. are vets by that time.
I still don't mind the rebuild, if it's done right. Panarin is the best UFA option there is for us. Elite! talent, a ppg-player, still young, wants to come here. Sign him. 8.5m/y, easy money. It's a safe bet with Breadman, not like all our other FA signings ... just make sure we have the cap.