With all that said. Is Chicago trying to save money.
How about we throw them Humphries and a pick for Noah. I mean if they are willing to get this kid of compensation for Deng, we might as well try.
Throw Jordan Crawford in there too, they need a Rose replacement right?
Deng wasn't part of their long term future. Noah is. Chicago didn't want to pay Deng the money he would have gotten this summer and had a quality replacement in Jimmy Butler already on their roster. Add in long term concerns about restructuring their team around D-Rose and needing that financial wiggle room and Deng was expendable.
That isn't the case with Joakim Noah. He is younger and harder to replace. The Bulls will keep him and D-Rose and rebuild their franchise around those guys.
Like Deng, Boozer won't be part of the Bulls future either. So you could probably Boozer in a straight swap for Humphries if that is a deal you wanted to do. Taj Gibson may even be available at the right price. Say cap flexibility and a first round pick.
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Moving Deng is not purely about saving money. It is about building a new team.
The previous core of Rose - Deng - Boozer - Noah had run it's course largely due to bad luck with Derrick Rose's injury problems. They needed to restructure to find a younger All-Star talent(s) to put alongside Rose + Noah in order to compete for a title once again a few years down the line and for the 3-5 year window beyond that point.
Moving Deng and creating the cap flexibility to do that was a necessary step in that long term plan.