I don't think that there's any question that he should be back next season....
He's a kid with a good mid-range game who seems to have added a 3-pt shot over the summer. He also plays defense which is paramount.
It's going to be tough.... because he honestly deserves more than Amir and we paid Amir what $5M per?
I'd be happy to lock Sonny up with a contract around the 4 yr. $17M range.
I can see him commanding more on the open market though. Esp. if he keeps scoring at his current clip.
Some desperate team might even offer him the MLE.