Pacheco's knee injury, per head coach Dan Campbell, is not a concern, but he is now dealing with a back injury, Dave Birkett of the Detroit Free Press reports.
Pacheco has been out of action with an MCL sprain, and although he seems to have moved past the knee issue he is now dealing with another injury. Campbell noted that Pacheco was feeling better Wednesday, but further details were not provided, so it's unclear if the latest setback will affect his availability for Week 1.