.Resource: 49ers have Aiyuk field structure along with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk field demand: 49ers WR more likely to become dealt than obtain expansion coming from San Francisco, every report CBS SportsReport: 49ers have structure in place for Brandon Aiyuk patronize pair of groups San Francisco ChronicleReport: 49ers have actually exercised frameworks of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers expert offers most current improve on Aiyuk as trade stories swirl Yahoo Sports.