McMillan worked with the training staff Tuesday while his teammates practiced on the first day of OTAs, Joe Person of The Athletic reports.
The wideout's likely dealing with a minor injury, as he seemed to finish his rookie season healthy and wasn't reported to have needed offseason surgery. McMillan played all 18 of Carolina's games last year, including a playoff loss, and he was named the 2025 Offensive Rookie of the Year for his efforts as a 1,000-yard receiver. He's locked in as the centerpiece of Carolina's passing game, with the team's most significant offseason addition to the unit being athletic but unpolished third-round pick Chris Brazzell.