.Source: 49ers have Aiyuk profession structure along with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk business demand: 49ers WR most likely to be dealt than obtain extension from San Francisco, per document CBS SportsReport: 49ers have structure in position for Brandon Aiyuk trade with two groups San Francisco ChronicleReport: 49ers have exercised frameworks of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers insider gives most current update on Aiyuk as trade rumors swirl Yahoo Sports.