While butler may be the best player I think that Carmelo gives them a better shot at winning a title before the window closes.
Melo will be 32 years old in 5 months. Butler will be 26 years old in 5 months.
Does a Carmelo/Gasol/Rose/ whoeever line up really have more of a chance vs the Cavs or Hawks in a 7 game series after removing Butler?
Remember they'd be giving up 6 years of Butler in his prime for a 1 or 2 year window with Carmelo and Pau Gasol...I'm not sure what that window leads them to..is it a window for making the ECF and getting blasted by the Cavs for 1 or 2 years? Gasol will be 36 years old soon.
I just think that the Bulls would send out McDermott, Mirotic and Bobby Portis for Carmelo Anthony and try and pair him with Butler before ever giving up a young top 15 player for an aging, slightly deteriorating Melo....
If the Bulls roster were the Celtics roster, would you trade Jimmy Buckets for a year or two of Carmelo? Nope.
So summarize my long winded ramble in one sentence:
The Bulls aren't giving up Jimmy Butler with 6 years in his prime left, for a regressing Carmelo and a 1 or 2 year window.