Dude, i don't know what sport you've been watching but the bulls are desperate to dump salary. They have been since the summer. And it's not a matter of them rebuilding. They've already extended Gibson and need to rid themselves of Boozer's salary. They also need a veteran back up for Rose as well as a decent 2 guard. We have plenty to offer them in terms of saving money as well as role players who can help them.
I'm watching basketball and it will be much easier for them to trade and replace Rip then trading and replacing Boozer. Like someone in this thread already mentioned, if they trade Boozer it will be in the summer. He's essential to what they are doing this year. Rip isn't. If we are getting our pick back, expect Rip to come with it.