The Panthers have signed linebacker Andrew Gachkar, according to a team announcement. The veteran will serve as insurance in the event that Luke Kuechly is out for an extended period of time. Kuechly was forced out of last week’s loss to the Eagles when he suffered a head/neck injury. The collision with Eagles guard Brandon Brooks was extra concerning given Kuechly’s history of head injuries. He did not practice on Tuesday and he remains in concussion protocol, so his timetable for recovery remains unclear.