.Resource: 49ers possess Aiyuk business platform along with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk field need: 49ers WR more likely to be worked than receive expansion from San Francisco, per record CBS SportsReport: 49ers have framework in place for Brandon Aiyuk patronize pair of groups San Francisco ChronicleReport: 49ers have worked out platforms of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers expert offers most recent upgrade on Aiyuk as trade reports swirl Yahoo Sports.