A second-round pick by the Cowboys in 2011, Carter led the Cowboys with five interceptions in 2014. He started only eight games and missed three with a quadriceps injury. According to the coaches' breakdown, he had 75 tackles to go with one sack, four tackles for loss, three quarterback pressures and eight pass deflections.
Carter, 27, played at a higher level down the stretch, recording three picks in the final three games. He also had 12 tackles in the regular-season finale against the Washington Redskins.
Carter started 32 out of 49 games in his career with the Cowboys. He was coming off a torn anterior cruciate ligament his final season at North Carolina and played just 10 games in 2011.
He started 11 games in 2012 before suffering a dislocated elbow. The Cowboys moved to a 4-3 scheme in 2013 and Carter played weak-side linebacker in 2013 and mostly on the strong side in 2014.
ESPN.com Cowboys reporter Todd Archer contributed to this report.