.Source: 49ers possess Aiyuk field framework with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk profession need: 49ers WR most likely to become dealt than get extension from San Francisco, per report CBS SportsReport: 49ers possess structure in position for Brandon Aiyuk trade with pair of crews San Francisco ChronicleReport: 49ers have worked out platforms of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers insider provides most current upgrade on Aiyuk as trade reports swirl Yahoo Sports.