Don't see Lee as a good fit in Boston. Not because he can't shoot, it's more about the type of shots he attempts. We already have a 6'5" shooting guard who nails spot up jumpers. Moreover we need shot creators, and Lee doesn't fit that mold.
Williams grabbed my attention playing for NJ, but I don't think he's worth risking for Green who has a more nuance to his game at this stage. Plus he's abysmal from the field ... 30% 16-23ft. and 20% from mid range.
Jordan Hill is a nice energy guy, decent rotation player. Limited offensive game and not as good as Davis in the PF department.
Celts will stick with Jeff Green here.