2013 may have been Reggie Bush's best season in the NFL, as he piled up a career-high 1,512 combined yards to go with seven combined touchdowns in 14 games. But 2014 was one of his worst, as he missed five games and totaled only 550 yards and two touchdowns. Furthermore, his yards per carry dropped from 4.5 in '13 to 3.9 in '14, his lowest YPC since '08.

During the offseason, Bush will turn 30, the magical age at which most running backs provide diminishing returns. So it's fair to wonder whether the Detroit Lions will sever ties with him.