Bears receiver Luther Burden exited practice early on Saturday, and now there is more information about his status.Per Ian Rapoport of NFL Network, Burden suffered a groin injury and is set to miss some time.His timetable to return has not been reported.Burden suffered the injury in one-on-one drills, with reporters noting he limped back to the locker room.Last year as a rookie, Burden caught 47 passes for 652 yards with two touchdowns.