If the pick is top 2, I'd really want to keep it and grow a star from home. If it's outside the top 2 I'd throw that in a deal for Butler.
I wrote in another thread I'd try to get him with #16, #23, #31, next year's Brooklyn pick, a handful of future second rounders, Avery, and any combination of the youngsters they want (Young, Rozier, Hunter, Mickey). A lot of folks seem to think that's not going to be enough for Chicago and you might be right. But is there another team out there that can offer better than 3 firsts, an army of seconds, and a bunch of prospects? Just the Sixers could offer something better, I think.
Anyway, that would be my dream. Keep this Brooklyn pick and cash in most of the future assetts for Butler.