I love it for the Celtics.
The Cavs are already playing great defense. What does Wallace really add?
Now they are adding a player that is not going to help open things up for James. An inside player at the same position Lebron plays.
Makes it easier to guard Lebron.
Plus, if it does not work out, they have just shot themselves in the foot in terms of future flexibilty around James.
They can do better.