.Source: 49ers possess Aiyuk field framework with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk profession need: 49ers WR more likely to be dealt than get expansion coming from San Francisco, per file CBS SportsReport: 49ers possess framework in place for Brandon Aiyuk trade with two crews San Francisco ChronicleReport: 49ers have actually exercised frameworks of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers insider gives most recent improve on Aiyuk as trade reports swirl Yahoo Sports.