The Giants have designated outside linebacker Kareem Martin for return. Martin, who was spotted practicing with the team Wednesday, now has a 21-day window for the Giants to decide whether to activate him or leave him on injured reserve. 

Martin was placed on injured reserve on Sept. 11 with a knee ailment. With NFL teams allowed to return two players per year from injured reserve, MArtin's return means that the door on receiver Russell Shepard's season is officially closed.