.Resource: 49ers have Aiyuk trade structure with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk profession requirement: 49ers WR more probable to be worked than obtain extension from San Francisco, every file CBS SportsReport: 49ers possess platform in place for Brandon Aiyuk patronize two crews San Francisco ChronicleReport: 49ers have exercised platforms of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers expert gives most current update on Aiyuk as trade reports swirl Yahoo Sports.