.Resource: 49ers have Aiyuk trade framework along with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk trade demand: 49ers WR more likely to be handled than obtain extension from San Francisco, per record CBS SportsReport: 49ers possess structure in position for Brandon Aiyuk trade with pair of staffs San Francisco ChronicleReport: 49ers have actually worked out frameworks of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers insider offers most up-to-date update on Aiyuk as trade rumors swirl Yahoo Sports.