San Francisco 49ers linebacker NaVorro Bowman (53) and quarterback Blaine Gabbert (2) warm up during an NFL football practice Thursday, June 9, 2016, in Santa Clara, Calif. The 49ers open camp Sunday, July 31, in Santa Clara.
San Francisco 49ers linebacker NaVorro Bowman (53) and quarterback Blaine Gabbert (2) warm up during an NFL football practice Thursday, June 9, 2016, in Santa Clara, Calif. The 49ers open camp Sunday, July 31, in Santa Clara. Marcio Jose Sanchez AP
San Francisco 49ers linebacker NaVorro Bowman (53) and quarterback Blaine Gabbert (2) warm up during an NFL football practice Thursday, June 9, 2016, in Santa Clara, Calif. The 49ers open camp Sunday, July 31, in Santa Clara. Marcio Jose Sanchez AP