.Source: 49ers possess Aiyuk trade platform with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk trade demand: 49ers WR very likely to be dealt than get expansion from San Francisco, every record CBS SportsReport: 49ers have framework in place for Brandon Aiyuk trade with two staffs San Francisco ChronicleReport: 49ers have worked out frameworks of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers insider offers most recent upgrade on Aiyuk as business rumors swirl Yahoo Athletics.