.Resource: 49ers have Aiyuk field framework along with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk business demand: 49ers WR more probable to be dealt than get expansion coming from San Francisco, per file CBS SportsReport: 49ers possess framework in location for Brandon Aiyuk trade with two groups San Francisco ChronicleReport: 49ers have worked out frameworks of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers insider offers newest upgrade on Aiyuk as trade gossips swirl Yahoo Sports.