.Resource: 49ers have Aiyuk business framework with Browns, Patriots NBC Sports Bay AreaBrandon Aiyuk field need: 49ers WR more likely to be handled than acquire extension from San Francisco, every record CBS SportsReport: 49ers have framework in location for Brandon Aiyuk patronize two staffs San Francisco ChronicleReport: 49ers have actually worked out structures of Brandon Aiyuk trades with Browns, Patriots 49ers Webzone49ers expert gives most up-to-date update on Aiyuk as field stories swirl Yahoo Athletics.