It's a matter of getting back major stars plus major pieces + draft picks + maybe an expiring contract.
Like maybe
Al J, Kevin Love (good, young, cheap), Foye (I don't think he's gotten his big payday yet), Bassy (expiring), draft picks
Chris Paul, David West, J Wright, a looooooooottttt of draft picks
Ben Gordon, Tyrus Thomas, Derrick Rose, Deng something to make salaries work. I doubt the Bulls go for it.
Derron Williams, AK, Okur, Milsap after a big raise, draft picks
Hard to say
Too many possibilities