Xavi has good replacements just in case Sergio Busquets cannot make it to feature in the game against Manchester United, he could play Kessie in DM while Gavi and Pedri can play in the midfield. I think Xavi is already preparing his team for this game as Erik Ten Hag is preparing his for this game too.
Gavi's placement on the wing is still very good and I want Xavi to continue to do that. As for the midfield, De Jong and Pedri can still be filled in. This is still very good to do.
This will be better in terms of the transition later or maybe if Barcelona want to make changes to the attack in the second half, for example, they can still improvise.
There were so many disappointing players from the past few years that they are shocked about Gavi being able to play anywhere and still be good. Pedri and De Jong on the midfield, Gavi and when he returns Dembele on the wings, that sounds like a very good system for them and could work very well, or they could just go back to how they were, dembele and raphinha at wings, de jong around the midfielders and gavi/pedri duo at midfield, sort of like back when xavi/iniesta played, not as good if you ask me but there is a whole decade to decide since these kids are still young. They really built a very good team, I think they will only get better and better.