He could backup Mark at the 5 while Coleman backs up Banchero or plays some 4 alongside him. More noted as a shot-blocker than as a rebounder. History of nagging injuries...
Why does a silent, brief, non-violent, non-intrusive expression of opinion bother you so much?
It’s by far a student-athlete’s best way to make his support visible for a movement of utmost importance to him.