Not sure, but I'd bet the Kings could lure Luke Walton back. Just look at his winning record with the Warriors as interim head coach (39-4) in 2015-16. Now that is the measure of a good coach. Wins trump all other considerations.
Luke could hire his father, Mark Jackson, both Van Gundys, and Doris Burke as assistant coaches. What a conglomeration of brilliant basketball minds. Looking at 82-0 next year with that crew.
Point being: Mike Brown is fine for now. The real talent is on the basketball floor during the game. Sure, decisions by a coach can influence a close game but if the player talent is not there then even a genius coach is relegated to a dismal record. (Popovitch coached missed playoffs in the last five seasons, lost in first round the previous two seasons, 2023-24 record 22-60, same in 2022-23 as an example.)
On the other hand, even an inept coach, given sufficient player talent, can have a positive and winning season. Luke Walton with the Warriors vs. Luke Walton with the Kings and Lakers illustrates that point.
Now Mike Brown has a chance to prove where he stands in the inept/genius continuum of coaching talent. This third year will be determinative if variables remain the same. Player trades, injuries, or other unforeseen circumstances can influence the evaluation, of course. For the sake of the Kings and their fans, I hope the scale tips toward the genius end.