San Francisco 49ers head coach Kyle Shanahan spoke at his Monday press conference about Jason Verrett's torn ACL, the addition of Dre Kirkpatrick and how feels about the team's cornerback depth. Questions about Trey Lance's usage in Week 1. Raheem Mostert will miss some time with a knee injury, but should be back this year. Also, why Brandon Aiyuk and Trey Sermon were benched in favor of Trent Sherfield and Elijah Mitchell vs Detroit. Learn more about your ad choices. Visit podcastchoices.com/adchoices