Mike McGraw's latest column discusses several interesting things, but according to Mike, the Bulls are not shopping Tyrus. They may trade him for Bosh/Amare/stud big man etc, but aren't looking to send him away for nothing.
I'm not sure if this is based on something Mike's heard or common sense, but it definitely contradicts some stuff I've heard from league sources. We'll see how it pans out.
More fun stuff at the link, so give him his due and read the rest of the article.