The Celtics have an obvious offseason strategy. Their problems last year were their age and their lack of athleticism. So, what do they do? They release Tony Allen (for the record, young and athletic and could defend LeBron/Wade). Then, they pick up Jermaine O’Neal (who lost his youth and athleticism long ago) to replace Kendrick Perkins. Now they have reportedly picked up Shaq (see: Jermaine O’Neal parentheses).
So to recap, they had a problem with their old age and not being able to respond to athletic teams, and in this offseason they got older and less athletic (all due respect to Von Wafer, although I think that goes without saying).