San Francisco 49ers running back Christian McCaffrey is dealing with tendinitis in both Achilles, which has raised concerns about his availability for the upcoming games. Coach Kyle Shanahan indicated that McCaffrey's condition may require him to remain on injured reserve for an extended period, potentially missing more than just the initial four games. A recent visit to a specialist in Germany has led to a plan for gradually increasing his activity level, but there is no definitive timetable for his return.

• McCaffrey is experiencing tendinitis in both Achilles, which may lead to a longer recovery time.
• The 49ers are considering placing him on injured reserve, which would require him to miss at least four games.
• His return could be pushed to early November, depending on his recovery progress.