San Francisco 49ers wide receiver Brandon Aiyuk is feared to have suffered a torn ACL in his right knee, according to head coach Kyle Shanahan, who said, 'We're worried it's an ACL. Not confirmed yet.' Aiyuk sustained the significant injury during Sunday's loss and will undergo further tests, including an MRI, to determine the extent of the damage. There is also concern for a possible MCL tear. If confirmed, the injury could sideline Aiyuk for the remainder of the season, exacerbating the 49ers' mounting injury woes, with fellow receivers Deebo Samuel (illness) and Jauan Jennings (hip) already out.
