1) We have the cap space
2) He would fit our defense
3 ) None of the money in his contract is guaranteed.
He's a locker room cancer. No chance Caldwell brings a guy in who may or may not buy into the system. They don't want a loose cannon wrecking the atmosphere they've built.
Pass.
He won't take a pay cut with a trade, it may not be guaranteed, but nothing is forcing him to re-negotiate either.