If you trade Exum for Mirotic, you both get a player that gives you something you desperately need (a consistent starter at the 4 that can shoot*) and it's a stealth salary-dump. You'd probably have to throw in a 2nd. Why on earth would NOP keep Mirotic at this stage, and with the Sixers blowing their load for Harris, how are they competition at this point?
Same thing could be said in a deal for Jabari. I haven't done a deep dig on Chicago's cap situation or have any idea what their plan is, but I'd be happy to give the guy a whirl to at least see if it could work.
Bjelica is probably a pipe-dream, but I the fit is still a little weird given Bagley and the timeline with them.