One area of improvement for each member of the Celtics this offseason

Jaylen Brown controls the ball against Tyrese Maxey. | Bill Streicher-Imagn Images As heartbreaking as it is to watch a team with legitimate championship aspirations fall in the first round to a rival, there is a silver lining for grieving Celtics fans. With the extra few weeks, the Celtics can allocate even more time to an area that separates them from the bulk of other NBA teams: player development. OK, maybe it doesn’t remove the pain of the loss entirely, but hey, it’s something. As they