Some notable developments at practice for the Patriots: OT Sebastian Vollmer (concussion), OT Marcus Cannon (toe) and RG Tre’ Jackson (left knee) all returned to practice and are expected to be limited. The offensive line has been ravaged by injuries, but the return of the trio shows that things are improving. Meanwhile, LB Jamie Collins remains absent. Collins has missed the last two games with an illness and his chair was folded up at his locker earlier in the day, indicating that he hasn’t been at the facility. Finally, rookie CB Justin Coleman (hand injury) wasn’t present at practice, as practice squad players Chris Greenwood and Brock Vereen added depth at a position where the team is already shorthanded.