Barcelona have many important matches in this month but have absent with five regular players such as Jules Kounde, Robert Lewandowski, Raphinha, Pedri adn Frenkie De Jong. Its not good situation for Xavi Hernandez exactly in this month have to face Real Madrid in El Clasico match without have their important player. Last update, Gavi rumor get injury with Spain national teams and not confirming yet about how serious injury with him will absent for several matches later or not. Next match against Athletic Bilbao, Xavi Hernandez have try with new formula or scheme to anticipation with some important player absent, he try with attacking line and see how effective with Ferran Torres replacing Robert Lewandowski position.
To be more precise, Barcelona will have three matches in six days this month, the opponents they will face are quite tough, namely Athletic Bilbao, Shakhtar Donetsk and Real Madrid. In my opinion, Bilbao and Shakhtar can be handled well even without a complete squad. Xavi needs a complete team when he meets Madrid in the first "El Clasico" of the season. The good news is that Xavi will find his squad in complete form, it seems, only Frenkie De Jong doesn't know yet when he will recover from injury and be available again.
From another point of view, El Clasico will always be an event to test the strength of the title challenger every season, after Madrid lost surprisingly to ATM, I think Barcelona can do the same because they will act as hosts. Or at least hold Madrid to a draw, with The situation is that many players are doubtful about appearing due to injuries.