The Packers are expected to shop linebacker Nick Barnett after signing A.J. Hawk to a multiyear deal. Barnett broke his wrist during a Week 4 game against the Lions, opening the door for Desmond Bishop to line up next to Hawk and emerge as a core player. He can't be dealt until a new labor agreement is reached and, according to a source, Green Bay will explore releasing him if a trade partner can't be found.