nah i wouldn't just release him before the season is out. That would be a pretty cold move for a guy the team supposedly put a lot of faith in before the season - after all they put his face up on banners as their marketing campain and one would assume they don't do that with just anyone (although you could argue they did in this case).
Anyways, he is still a good, athletic young player. When he plays within himself (which he has done for a large chunk last year and early this year) he can be an effective guy.
Now when it comes to contract negotiations for next year and beyond.... Colangelo better not even entertain the notion of overpaying Sonny. I know he's Demar's BFF, but he better not get any ideas of being close to Derozan's pay scale. If so, then see you later.