.Resource: 49ers possess Aiyuk field platform with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk field demand: 49ers WR more likely to be handled than get expansion from San Francisco, per report CBS SportsReport: 49ers have structure in place for Brandon Aiyuk patronize two crews San Francisco ChronicleReport: 49ers have actually exercised platforms of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers insider gives latest update on Aiyuk as field rumors swirl Yahoo Sports.