From the article
"He is also capable of possibly taking minutes away from Spurs’ starter Danny Green, who has proven to be a very one-dimensional player. Belinelli has better ball-handling capabilities and can drive to the basket better than Green."
This may be what Green needs to emphasize to him that he must continue to work to keep improving, if he comes back next year without having added a single new skill set to his game there's a good chance he'll find himself out of a job again.
Since you can't fix stupid, at least you should be able to prosecute it!