Say the Celtics could decide to send him back for his junior year at LSU and he joined forces with Ben Simmons. LSU really lacks leadership, and Mickey would have been the undisputed leader of that team, with Jarell Martin leaving for the NBA.
Simmons desperately needs a player on that team to get in his face and challenge him and that would have been Mickey.
So the Question is, in a world where the Celtics could actually do this, what would make Mickey a better player. Getting a head start on some scheme's and concepts with Maine. Or playing with the best prospect this year who needed his leadership, not to mention he needed his talent on the court! Mickey is a much better shooter than SImmons lol.