How will the Texans replace veteran wide receiver Andre Johnson, the greatest player in franchise history?The normal ways: Free agency and the draft.Green Bays Randall Cobb tops the potential 2015 free-agent class and could command a contract of at least $10 million annually. Cobb collected 91 catches for 1,287 yards and 12 touchdowns last season for the Packers, who came a couple minutes away from advancing to...