Melifonwu (undisclosed) is the only injury concern for the Lions in Week 1, head coach Dan Campbell stated Monday, Dave Birkett of the Detroit Free Press reports.

Melifonwu's injury details are unclear other than the fact he's considered questionable for Week 1 at this time. Melifonwu's practice status in the days ahead should shed some light on his potential availability as the team's season opener approaches.