.Resource: 49ers have Aiyuk business structure with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk field requirement: 49ers WR more probable to become handled than obtain expansion coming from San Francisco, per document CBS SportsReport: 49ers possess platform in place for Brandon Aiyuk trade with two teams San Francisco ChronicleReport: 49ers have actually exercised frameworks of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers expert provides most current update on Aiyuk as business rumors swirl Yahoo Sports.