The Facts: Tolbert has agreed to terms on a four-year deal with the Panthers, a league source said Monday.

Diehards Line:Tolbert carried the ball 121 times for 490 yards with eight touchdowns in 2011, adding 433 yards and two more TDs as a receiver. NFL Network insider Jason La Canfora doesn't believe Tolbert's signing is as an immediate indication the Panthers will trade RB Jonathan Stewart. There could be some unique RB packages in mind, and Tolbert also brings a lot of productivity on special teams. ... Stay tuned. More details to come.