Well, by that logic, to me, why trade for Pau who's having an off, injury plagued season when guys like Plumlee are propelling them to the playoffs? The fact is, Wilson has been good for years and by all accounts is a better player than any of their wings IMO.
As I said about CHI, they can do the trade you mentioned and still be under the LT so it's not an issue. If they don't amnesty Boozer, then they won't have cap space even if they move Dunleavy. That's the entire point about mention cap space with regards to the Bulls per reports. Cap space only comes into play for them if Boozer is traded for no returning salary or amnestied. Even with Chandler, they could still have good cap space.
The Bulls may well be open to this trade next off-season, but by no means can I see them being keen on buying a player now, especially when they only have one straight-up offer they can give.
They were willing to pay for Deng. They just didn't want to go above a certain number and obviously Deng wanted to test FA and CHI had to make a decision. However, CHI did make Deng a compe ive offer.
But if the Bulls don't trade for Wilson and trade guys like Dunleavy/Kirk to maximize their potential, they would still have to move Boozer/amnesty him for cap space to be there. So the question is: Get Wilson + 8/9M in cap space or don't get Wilson and get 14M in cap space. You could definitely argue getting 14M in cap space is the better option, but I could see how getting two good pieces (Wilson + 8M FA) would be appealing too..