.Resource: 49ers possess Aiyuk field structure along with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk business need: 49ers WR more likely to become worked than get extension from San Francisco, every document CBS SportsReport: 49ers possess structure in location for Brandon Aiyuk trade with two staffs San Francisco ChronicleReport: 49ers have exercised platforms of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers expert provides most recent improve on Aiyuk as field rumors swirl Yahoo Athletics.