Cayden Primeau represents a steal from the 2017 draft. Selected in the 7th round, 199th overall, he was on the Canadiens' list for the 2nd round.
With Carey Price at his best and Zachary Fucale showing great promise, the Canadiens didn't plan to draft a goalie, so they let him slip.
Seeing him slide to the 7th round, the Canadiens had no choice but to act, and they acquired the Flyers' pick to select Primeau. Today, it's clear that it was a good decision.
In short, there's a lot said about the work of the Timmins and Bergevin duo, but they've made some good moves for the current Canadiens team. Cayden has come out of his shell, and he's one of the many players to come from them, like Nick Suzuki (trade), Kaiden Guhle, Cole Caufield, to name a few.