The 29-year-old Murphy last played in the NFL with Tampa Bay in 2004 when he appeared in three games, all in a reserve role. He spent the final 12 games of the '04 season on injured reserve with an Achilles injury.
A sixth-round draft choice of Chicago who was released by the Bears prior to the 2000 regular season, Murphy also played with the Bucs from 2000-01. During his tenure in Tampa Bay, he caught eight passes for 71 yards and a TD. He also appeared in five contests with Houston in 2002 and did not have a reception.
Murphy, who was out of football in 2003, has returned 31 kickoffs during his NFL career for a 21.8-yard average with a long return of 54 yards.
A college running back who played at Kansas State, Murphy is a native of Jacksonville.