.Source: 49ers have Aiyuk trade platform with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk business demand: 49ers WR more likely to be handled than acquire expansion coming from San Francisco, every file CBS SportsReport: 49ers have framework in location for Brandon Aiyuk patronize two groups San Francisco ChronicleReport: 49ers have exercised structures of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers insider offers newest upgrade on Aiyuk as business rumors swirl Yahoo Sports.