Roma midfielder Muhammed Bah is expected to miss around nine months after undergoing knee surgery following an injury sustained during a friendly against Cardiff City. Both reports say Bah is stretchered off in the match as Roma lose 4-1, and that initial concerns lead to confirmation of a long-term layoff. Football Italia and Yahoo Sports describe the injury as another setback for the player and state that the prognosis is roughly nine months out. The outlets also connect the timeline directly to the surgical procedure rather than a short recovery window, indicating the club treats the issue as significant. While the friendly result is mentioned in the match context, both sources focus on the injury impact and the confirmed rehabilitation period. The reports do not provide additional details beyond the surgery and expected absence duration.