.Resource: 49ers have Aiyuk field platform along with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk field requirement: 49ers WR most likely to become worked than receive extension from San Francisco, per document CBS SportsReport: 49ers possess structure in position for Brandon Aiyuk trade with pair of groups San Francisco ChronicleReport: 49ers have actually worked out structures of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers expert provides most up-to-date improve on Aiyuk as business rumors swirl Yahoo Athletics.