Good Topic, I know he's still young, but I'm expecting much more than last year for sure. He now knows exactually what to expect in the NBA, it should be no surprise that he needs to get stronger and add 7-10 pounds of muscle. He knows what's expected of him on the defensive side too. (watch some film) He should be expanding his skills, ball handling, shooting, get to the hoop, etc. He is a pro now, basketball is his vocation, time to work hard in the off season.
I'm expecting at least a rotation player that continues to show a high up side and continues to show more and more. We should see a potential starter. When he enters the game he should look like he belongs.
9-10 points a game sounds reasonable, improved ability to get to the rim, help on the boards, with a look of simply more confidence.
If by mid season he's still not defending well enough to be in the rotation, and just chucking 3's...not showing growth, we have a problem.