.Source: 49ers have Aiyuk business framework along with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk business need: 49ers WR more likely to be worked than obtain expansion coming from San Francisco, per report CBS SportsReport: 49ers possess platform in place for Brandon Aiyuk trade with pair of teams San Francisco ChronicleReport: 49ers have exercised platforms of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers insider gives most current update on Aiyuk as profession reports swirl Yahoo Sports.