Detroit Lions running back Jerome Harrison has been placed on the reserve/non-football illness list after having a surgery for a brain tumor in October.
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Harrison has spent seven years in the league but Philadelphia Eagles doctors discovered the existence of a tumor after the Lions attempted to trade him to Philadelphia.
He spent the rest of the season on the reserve/non-football list.
Before that the running back carried the ball 14 times for 41 yards for the Lions. He also caught one pass for three yards.
Harrison had his best year in 2009 with the Cleveland Browns when he rushed the ball 194 times for 862 yards and five touchdowns. He also caught 34 passes for 220 yards and two touchdowns.
The Associated Press contributed to this report.