.Source: 49ers possess Aiyuk trade platform with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk profession need: 49ers WR most likely to become worked than acquire expansion coming from San Francisco, every document CBS SportsReport: 49ers have platform in position for Brandon Aiyuk trade with pair of crews San Francisco ChronicleReport: 49ers have worked out platforms of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers expert provides most up-to-date update on Aiyuk as trade stories swirl Yahoo Sports.