.Resource: 49ers possess Aiyuk business platform along with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk business requirement: 49ers WR more probable to become dealt than receive extension coming from San Francisco, every record CBS SportsReport: 49ers have framework in place for Brandon Aiyuk trade with two crews San Francisco ChronicleReport: 49ers have exercised structures of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers expert gives latest improve on Aiyuk as trade gossips swirl Yahoo Athletics.