Logjam at Center. Maybe in terms of bodies but so many question marks. We may have had to trade Thompson for other reasons but he had the best chance of getting the most minutes due to health and play.
Horford- old and will miss games due to nagging injuries as well.
Williams - who should be getting starter minutes and should be the starter but won't because he's already injury prone. Can't see that changing as he gets older.
Brown- The Celtics are going to regret not keeping the 1st round pick and taking the guy from the Turkish league. If he gets any significant minutes, fans will see the holes.