Green, 23, was selected in the second round, at No. 46, in the 2013 draft. Denver acquired his rights in a draft-night trade with Utah.
Green then played one season with Italian club Montepaschi Siena, averaging 10.8 points on 56 percent shooting.
The 6-foot-3, 185-pound guard posted averages of 16.6 points and 3.0 rebounds over five summer league games with Denver this month.
As a senior at Virginia Tech, Green led the nation in scoring at 25.0 ppg and was named the Atlantic Coast Conference player of the year. From The Denver Post:
"I kept hearing 'He's only a scorer, he wasn't a point guard,' " said Green of his experience a year ago. "In my head I was saying I'm going to go out here and show everybody I can facilitate, I'm not just a scorer. Honestly, that hurt me more than anything. Instead of just being myself. If you don't like me for who I am, and I'm a scoring point guard, then maybe I don't belong. But there's a lot of scoring point guards (in the NBA). I think I can be one as well."
The Nuggets won 36 games and missed the playoffs last season.
- Chris Johnson