49ers coach Shanahan updates on injuries: key players out, some returning for training camp.

49ers head coach Kyle Shanahan provided updates on player injuries. Brandon Aiyuk and others recovering from ACL injuries aren't expected to be ready for training camp. Ricky Pearsall, Jauan Jennings, and Mykel Williams are among those expected to recover in time for camp. Trent Williams and George Kittle participated in drills, while others like Spence Burford and Jake Tonges fill in for absent players.