Bears RB Roschon Johnson will miss Sunday's game against the Raiders due to a concussion. He has not returned to practice since sustaining the injury over two weeks ago. With RB Khalil Herbert on injured reserve, the Bears will rely on D'Onta Foreman, Darrynton Evans, and Travis Homer at the running back position. Foreman is expected to receive the majority of carries after handling 15 of them last week.