It's not yet clear how severe the veteran wideout's issue is, but Buffalo is likely to be cautious with him given that the team is in the early stages of training camp. Samuel is likely in line for a depth role in the Bills' wideout corps this season.

Linebacker Terrel Bernard and wide receiver Curtis Samuel were not available because each is dealing with a hamstring injury, the team announced. Defensive end A.J. Epenesa was back on the practice field after he missed the session Friday with an ankle injury.