Matt Maiocco and Laura Britt discuss the breaking news of Raheem Mostert being out for the rest of the 2021 NFL season, how it will affect the 49ers and what impact Elijah Mitchell and Trey Sermon will have this season.(1:26) Mostert out for remainder of season  (5:14) Is Mitchell the answer at running back? (8:36) How will Sermon factor into the running game? (13:36) 49ers sign Kirkpatrick to help their secondary  (26:41) Early season 49ers’ overreactionsSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.