San Francisco 49ers head coach Kyle Shanahan, left, and Chicago Bears defensive coordinator Vic Fangio, right, watch Stanford defensive end Solomon Thomas during NFL football pro day Thursday, March 23, 2017, in Stanford, Calif.
San Francisco 49ers head coach Kyle Shanahan, left, and Chicago Bears defensive coordinator Vic Fangio, right, watch Stanford defensive end Solomon Thomas during NFL football pro day Thursday, March 23, 2017, in Stanford, Calif. Eric Risberg AP
San Francisco 49ers head coach Kyle Shanahan, left, and Chicago Bears defensive coordinator Vic Fangio, right, watch Stanford defensive end Solomon Thomas during NFL football pro day Thursday, March 23, 2017, in Stanford, Calif. Eric Risberg AP