.Source: 49ers have Aiyuk profession platform with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk profession demand: 49ers WR most likely to become worked than receive extension from San Francisco, every file CBS SportsReport: 49ers possess framework in place for Brandon Aiyuk trade with 2 crews San Francisco ChronicleReport: 49ers have worked out frameworks of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers expert gives most up-to-date update on Aiyuk as trade gossips swirl Yahoo Athletics.