I think we are stuck with Stevens for another year. In hindsight it was a horrible decision to promote from within for the GM, HC and AGM after how awful the Kings were in 15, 16, 17. I still think the Kings made a gentleman's agreement with Stevens that it was going to be his team once Sutter retired and they did the honorable thing and kept him on. No proof of that, and Blake would obviously never admit it, but my personal opinion is that's what happened, why else would Stevens turn down so many jobs, it makes no sense.
I think Stevens stays the year (unless things were to really fall off) and his return depends on how the team does, missing the playoffs or a repeat of the 16 and 18 playoffs and he is done.