Montgomery agreed Tuesday with the Lions on a three-year, $18 million contract, Ian Rapoport of NFL Network reports.
Montgomery is set to stay in the NFC North after spending his first four years in Chicago. His signing indicates Detroit is likely out of the mix to re-sign Jamaal Williams, putting Montgomery in line to split work with D'Andre Swift. Montgomery saw the lightest workload of his four-year career this past season but still accumulated 801 rushing yards and five touchdowns on 201 carries to go along with 316 receiving yards and one touchdown on 34 receptions in 16 games.