.Source: 49ers have Aiyuk profession framework with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk business demand: 49ers WR more likely to become worked than get expansion coming from San Francisco, every record CBS SportsReport: 49ers have platform in place for Brandon Aiyuk trade with two teams San Francisco ChronicleReport: 49ers have actually exercised platforms of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers expert gives latest improve on Aiyuk as field stories swirl Yahoo Athletics.