Sure they can get a top five pick for him - through a three way trade.
Boston - Butler, #14
Chicago - Okafor, Bradley, Rozier, #23
Philly - #3
This works for everyone involved -
Boston gets their star and a late lottery pick they can use with 16 to move up;
Chicago gets a franchise cornerstone big in Okafor, a great, still young vet 2 guard in AB, and their point guard prospect that they envied last year. This gives them the best of both worlds by staying competitive in the East while getting younger and good prospects;
Philly - gets Dunn for Okafor.
This honestly makes too much sense all around not to happen.