After failing at the club world cup, Bellingham is set to end its shoulder woes. Reportedly he will take a long break for shoulder surgery that has been suffered for almost 2 years. This condition is certainly an additional strength vulnerability. I don't know how many weeks Bellingham will rest, but I think he won't be able to start playing for the start of the season but prediction is October. But they do have a lot of cover although they still don't have much experience and hours in La Liga. Xabi still has Arda Guler, Brahim Diaz, Eduardo Camavinga, and Dani Ceballos.
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https://www.nytimes.com/athletic/6484232/2025/07/15/jude-bellingham-shoulder-surgery-october-return/I think Bellingham's absence will have a significant impact on Real Madrid's performance. Although Real Madrid has players ready to fill the void while Bellingham is absent, it's highly unlikely that those players will be able to match Bellingham's contribution to Real Madrid's midfield. Therefore, Real Madrid's performance will likely decline slightly due to Bellingham's absence. However, this is unavoidable, as if Bellingham continues to endure the pain of his shoulder injury, it could have serious consequences. Bellingham has been nursing a shoulder injury for two years now, so postponing surgery is no longer an option. Therefore, Real Madrid must utilize the existing midfielders effectively. Xabi must also devise the right strategy to ensure Real Madrid's performance remains strong, even without Bellingham in the squad. And according to reports, Bellingham will indeed be recovering until October, but I personally think it could be longer. Because of the shoulder injury, his recovery will undoubtedly be quite lengthy.