Danny Green would be huge and an upgrade over Shumpert.
But, the Cavs are well over the cap and luxury tax line. Green can get more on the open market or from the Spurs.
Here's the thing. They wouldn't sign him in free agency.
Green would only come in a sign and trade scenario with the Spurs using the Haywood contract.
Cavs just can't surpass $13 million in returning salary.
If the Spurs are willing to do it, it would be because they have a larger target that they would be going after in free agency.