.Source: 49ers possess Aiyuk field platform with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk trade need: 49ers WR very likely to be handled than get expansion coming from San Francisco, every report CBS SportsReport: 49ers possess platform in place for Brandon Aiyuk patronize 2 staffs San Francisco ChronicleReport: 49ers have actually worked out frameworks of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers expert offers newest update on Aiyuk as field rumors swirl Yahoo Athletics.