There's a tentative timetable of three weeks for Gallinari's return, according to the Post, and he will have surgery in the next couple of days.
Gallinari missed all of last season due to an ACL tear in his left knee.
The 26-year-old is averaging 7.8 points and 3.0 rebounds per game this season. He scored a season-high 19 points on Saturday against the Indiana Pacers.
In 2012-13, Gallinari averaged 16.2 points and 5.2 rebounds in 71 games. He was traded to Denver in February 2011 in the deal that brought Carmelo Anthony to the Knicks.
The Nuggets (12-15) play the Charlotte Hornets on Monday.
- Molly Geary