It's unclear when Burkhead suffered his concussion.
With fellow running back Jeremy Hill placed on injured reserve Monday with a torn right ACL, the Patriots are thin at the position. Rookie running back Sony Michel was limited in Wednesday's practice with a knee injury.
Regresan a negociaciones Canadá y Estados Unidos
La canciller canadiense, Chrystia Freeland , dice que se lograron algunos avances en algunas áreas en las últimas conversaciones del viernes.
Burkhead's value to the Patriots extends beyond rushing the football (he had a team-high 64 yards on 18 carries in the opener), as he is also a capable pass-catcher.
James White and the newly signed Kenjon Barner are the lone healthy backs on the 53-man roster.
The team did add running back Kenneth Farrow to the practice squad Wednesday, releasing wide receiver Jace Billingsley. He played for the entirety of the Patriots' Week 1 win over the Houston Texans. Marcus Cannon (calf) and Nate Ebner (knee) were listed on the injury report, but full participants.