Ragnow, who turned 29 last month, had two years left on his contract. Campbell confirmed Thursday the team was aware of the possibility.
The Lions now head into the 2025 season with a new offensive coordinator and a new center, a hurdle to overcome for the league's top scoring offense last year.
During last week's first open OTA practice the Lions rotated between veteran Graham Glasgow and rookie second-round pick Tate Ratledge at center with the first-team offense. After selecting Ratledge with the No. 57 overall pick, Lions general manager Brad Holmes told the media the plan was to cross-train him at both guard spots and center. Glasgow has 22 career starts at center and has been Ragnow's primary backup there over his time in Detroit.
The team also signed veteran interior offensive lineman Trystan Colon this week. Colon, 27, has played in 51 NFL games over five seasons, most recently for Arizona in 2024. He played in 17 games for the Cardinals in 2024, making a career-high seven starts. He's made four career starts at center, all with Baltimore from 2020-22, and 11 starts at right guard from 2023-24 with the Cardinals.
The Lions are also high on second-year center Kingsley Eguakun.