.Source: 49ers have Aiyuk business structure with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk business requirement: 49ers WR very likely to be handled than receive expansion from San Francisco, every report CBS SportsReport: 49ers have platform in location for Brandon Aiyuk patronize pair of groups San Francisco ChronicleReport: 49ers have worked out structures of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers insider gives most current update on Aiyuk as trade rumors swirl Yahoo Athletics.