Green (back) is listed as questionable for Sunday's game against Dallas.
Green missed the first two practices of Week 10 prep due to a back injury that he sustained during the 49ers' 38-17 win over the Raiders in Week 9. He was limited in Friday's practice, and if he cannot play Sunday, then rookie fourth-rounder Ephesians Prysock and Nate Hobbs (groin, IR) would be candidates for elevated roles in the secondary.