I wouldn't mess with IT, AB, Crowder, Horford, Smart, Brown, Kelly, the 2 BKN picks, or our cap flexibility.
Everything else is fair game.
All we need is a rebounder who can shoot and doesn't suck on D.
Re-address finding another star in the offseason (unless of course one magically becomes available before the deadline). Don't risk breaking up our core or taking away cap space for a small sideways move (like Hayward for example).