.Source: 49ers possess Aiyuk trade platform with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk trade need: 49ers WR most likely to be handled than acquire extension coming from San Francisco, every record CBS SportsReport: 49ers possess framework in position for Brandon Aiyuk trade with 2 staffs San Francisco ChronicleReport: 49ers have worked out frameworks of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers expert offers newest improve on Aiyuk as profession gossips swirl Yahoo Athletics.