The Giants hired former Lions general manager Martin Mayhew as their director of football operations/special projects, the team announced.
Mayhew replaces Matt Harriss, who left the position for Detroit's vice president of football operations job.
Mayhew was the Lions GM from 2008 until November, when he was let go by Detroit. He joined the Lions originally in 2011 as senior director of football administration.
Mayhew played nine years in the NFL as a cornerback for Buffalo (1988), Washington (1989-92) and Tampa Bay (1993-96). He was the Bills' 10th-round selection in the 1988 NFL Draft and was a starter on the Redskins' Super Bowl XXVI championship team, the Giants said in a release.