McCluster was limited at Tuesday's practice due to a hamstring injury, Eric D. Williams of ESPN.com reports.
Outside of eight kickoff returns and two punt returns, McCluster hasn't made much of an impact in the box score, totaling two carries for three yards and four receptions for 18 yards in three games as a Charger. With a hamstring issue in tow, his reps could dwindle further this Thursday against the Broncos, but Wednesday's injury report will shed light on his potential Week 6 availability.