Warren Moon: Johnny Manziel has to adjust his game in the NFL

Warren Moon is a fan of Johnny Manziel’s skill set. However, Moon does have a few reservations about the 2012 Heisman Trophy winner. In an interview with Alex Marvez and Zig Fracassi on SiriusXM NFL Radio, Moon said the 6-foot, 207-pound Manziel must avoid seeking contact as much as he did on the college level.…