Trusnik signed a one-year contract with the Panthers on Tuesday. A former undrafted free agent, the 30-year-old linebacker has carved out a lengthy career in the NFL, due in large part to his work on special teams. The Panthers do have a possible opening to fill at one of their linebacker spots, and Trusnik could be part of a competition that would likely be led by A.J. Klein. Of course, with Luke Kuechly and Thomas Davis locked into three-down roles, the Panthers can't support a third IDP option at linebacker.