Christian McCaffrey injury update: 49ers star RB has Achilles tendinitis in both legs, Kyle Shanahan confirms CBS Sports49ers’ Christian McCaffrey dealing with Achilles tendinitis in both legs as injury news gets worse Fox News49ers’ Christian McCaffrey has bilateral Achilles tendinitis, Kyle Shanahan says NBC WashingtonKyle Shanahan confirms Christian McCaffrey has Achilles tendinitis in both legs NBC SportsNiners’ Christian McCaffrey (Achilles) targeting November return after seeking treatment in Germany NFL.com