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.