Rainey has signed with the Giants, NJ.com reports.
Rainey played in all 16 games for the Buccaneers last season, with the vast majority of his contributions coming on special teams as a kick and punt returner. Although he played well at running back for the Bucs' league-worst 2014 team, Rainey's role with the Giants will likely be rooted in special teams work, with his presence simply providing depth in the backfield.