.Source: 49ers have Aiyuk business framework along with Browns, Patriots NBC Athletics Bay AreaBrandon Aiyuk trade requirement: 49ers WR very likely to be handled than acquire expansion from San Francisco, per report CBS SportsReport: 49ers have framework in location for Brandon Aiyuk trade with 2 teams San Francisco ChronicleReport: 49ers have exercised platforms of Brandon Aiyuk patronizes Browns, Patriots 49ers Webzone49ers insider provides most recent upgrade on Aiyuk as business gossips swirl Yahoo Athletics.