.Source: 49ers have Aiyuk business structure with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk trade demand: 49ers WR most likely to become dealt than receive expansion from San Francisco, per report CBS SportsReport: 49ers have structure in position for Brandon Aiyuk patronize 2 crews San Francisco ChronicleReport: 49ers have exercised platforms of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers expert provides latest update on Aiyuk as field reports swirl Yahoo Sports.