Other than MJ was far far better of a defender already. He has several all-defensive teams in his career. Mitchell has made it clear he won't play defense, and doesn't care, and had no problem hanging it all on Gobert. If they build around Donovan they better focus on people who can hide his complete lack of effort for half the game. Because they gave up the all-world defender that covered up so many of his weaknesses that he willed us to several series wins despite much of the team doing nothing on the defensive end except funneling everyone to the middle and letting their guy just waltz on by. If they don't fill the massive void left by Gobert we'll be lucky to win 30 games.