San Francisco 49ers coach Kyle Shanahan, in a press conference, spoke about when wide receiver Brandon Aiyuk could return to the field after sustaining a torn ACL and MCL in a Week 7 game last season against the Kansas City Chiefs. Despite refusing to offer an exact date, Shanahan gave a closer picture of Aiyuk’s recovery, along with backup rookie quarterback Kurtis Rourke and second-year safety Malik Mustapha, also recovering from torn ACLs.