Favors matches Blake pretty well imo.
Also I seem to remember Milsap getting the best of Blake most matchups.
Blake was a relatively inexperienced player with a low skill level for a lot of the times that he played a Jazz team with Millsap. Blake is now way better than Millsap has ever been and will be.
Really doesn't have anything to do with the OP, just wanted to say that.
Also, yeah, these Jazz players should just work out with whomever is best for their development as people and players.
And Karl Malone's impressive history as a basketball player probably speaks more on his résumé as a student than as a teacher tbh.