I wouldn't give up a core piece for him right now. He's a buy low candidate that they appear to be willing to part with so nothing too dear. So no Smart, no Bradley, Thomas, Crowder, Brown.
I'd do Rozier and KO for Okafor. Seems like fair value and consolidates talent for us. I'd maybe add a low first into the mix as well, something like the Boston 2018 pick. If I could I'd also put Young in the deal and get Jerami Grant in return, I think they'd be willing to gamble on Young's potential as a shooter and Grant is a very underrated player in y eyes, one to watch this year