I know everyone is excited about the Nets pick this year, but Butler is a guarantee, where the draft pick has a chance to be good.
I'd give them Bradley, Smart and the Nets pick for Butler. Jae seems like the vocal leader of this team and with Butler having problems leading in Chicago, I'd like to keep Jae so that Butler can just fit in instead of needing to lead. It also doesn't hurt that Butler played with Crowder in college.
If by some miracle we could give them the '18 Nets pick instead of the '17 one I'd be ecstatic, but I just don't see that being realistic.
At this point, I think you have to include Brown in there, because there's no way he's going to develop properly behind both Crowder AND Butler at the swing position.
Here's what I'd offer them:
Chicago: Bradley, Zeller, Brown, Rozier, and the 2017 Brooklyn pick
Boston: Butler, Canaan
That's a fair offer that gives them an upgrade in prospects at the 1, 2, and 3, along with the best chances at the number one pick in this draft.
I'd then turn around and get serious about trading for Noel, offering up something like Jackson, the Memphis pick, AND the Clips pick for him, even the rights to someone like Yab if need be. With there being no other trade market for him at the moment and the fact that the 76ers simply aren't going to match the near-max offers he's going to get in free agency from the likes of Dallas, Brooklyn, etc., I think this should suffice for him.
That'd then leave us with a championship-level lineup of:
PG: IT, Smart
SG: Butler, Young/Canaan
SF: Crowder, Green
PF: Horford, KO/JJ
C: Noel, Amir