This isn't the player to get. Terrible attitude, terrible defensively, and would cost a lot to sign as a RFA. He's good but not great offensively.
This is an opportunity to insert ourselves into a deal with a TPE and extract some asset. For example just off the top of my head:
Kanter, Booker, TPE to OKC
Perkins to BOS
Wallace, Lamb to UTAH
We unload the last year of Wallace's deal just by giving up the TPE.
OKC gets two big men for Lamb and a new starting center.
UTAH gets a look at Lamb for about $7.2M (Wallace + Lamb > Booker)
I'm sure there are better combos, but if a contender could use Kanter and they need a 3rd team, enter Boston...