When the Denver Broncos signed Dre Greenlaw to a three-year deal this past offseason, they obviously knew what they were getting into, as Greenlaw has struggled to stay consistently healthy during his career. Still only 28 years old, Greenlaw has missed a ton of regular season action in the NFL and has not yet suited up for Denver in the regular season.
Greenlaw has dealt with what appeared to be a pretty persistent quad injury for a large chunk of the offseason, as he's been on IR the past month. At the end of the day, while us as fans want to see him out there, it would not be smart if Denver had rushed him back and risked a more long-term injury, like a total tear of the quad itself.