Trey Lance's vitally important 49ers preseason, Shanahan's dilemma and position battles to watch

Matt Maiocco and Jennifer Lee Chan break down what to watch for from Trey Lance and the 49ers throughout the preseason, beginning Friday night against the Packers. Maiocco then sits down with assistant coaches Bobby Slowik and Daniel Bullocks to get their thoughts on the Lance’s growth this offseason, and the competition at the safety group.2:00 What to expect from Trey Lance in preseason debut8:15 Kyle Shanahan's dilemma when play calling in the preseason16:20 Potential landing spots for Jimmy Garoppolo22:00 49ers passing game coordinator Bobby Slowick discusses Lance's offseason growth 33:00 Why the preseason and joint practices will be important for the offensive line45:30 49ers safeties coach Daniel Bullocks breaks down the competition for the starting spot opposite Jimmie Ward59:00 Ambry Thomas and Deommodore Lenoir going in opposite directions in camp