The Lions have placed seventh-round rookie safety Dan Jackson on injured reserve and signed Michigan Panthers CB D.J. Miller

Rookie safety Dan Jackson, the Lions' seventh-round draft pick, is out indefinitely after injuring his shoulder in Sunday's practice.

One team that is dealing with injuries is the Detroit Lions. The Lions recently placed rookie safety Dan Jackson on the team's injury reserve list. Lions head coach Dan Campbell gave a rather grim prognosis for the rookie. According to ESPN, Jackson is expected to miss an extended period of time.