Celtics Finalize Addition of Bucks Assistant Charles Lee

The Boston Celtics hired Charles Lee as their top assistant coach
Lee has championship experience as an assistant coach with the Milwaukee Bucks
Lee is known for his positive energy and enthusiasm for the game
Lee is widely viewed as a future head coach and has been a finalist for several head coaching positions
Lee's presence is expected to lift up everyone around him and help the Celtics navigate their second season under head coach Joe Mazzulla