The Chicago Bears continue to deal with injury concerns to one of their top draft picks. Rookie wide receiver Luther Burden III, who the Bears drafted 39th overall, has not practiced since suffering a hamstring injury during Chicago’s first OTA on May 20. Burden was expected to be ready for the start of training camp after missing spring workouts but has yet to take the field. “We were very hopeful that he’d be ready to go Day 1,” Bears coach Ben Johnson said Thursday.