.Source: 49ers have Aiyuk profession structure along with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk field requirement: 49ers WR very likely to be handled than obtain extension coming from San Francisco, every document CBS SportsReport: 49ers possess platform in place for Brandon Aiyuk trade with two teams San Francisco ChronicleReport: 49ers have worked out platforms of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers insider offers most recent upgrade on Aiyuk as business reports swirl Yahoo Athletics.