I have no idea, but the Bulls aren't in salary cap mode. You cut Boozer's salary and your incremental gain is at best the MMLE to the MLE which is like $3M and possibly a little extra trade flexibility (would need to check exact figures). I forget exactly with the new CBA but maybe the BAE too, but that's only every two years anyways, can't be combined with MLE, and honestly might even still be available when over the apron - I'd have to check. The NBA is not the NFL, MLB, or NHL in regards to salaries. Oh I know, I get into it with Thunder fans who want to amnesty Perkins but don't realize that financially the team gains nothing, so it won't happen. But I can understand the frustration of knowing you can't upgrade from Boozer until his contract is up.