I think Barcelona's midfield is not their main problem. The main problem is that they were facing a club who put the whole of its players behind the ball. They struggled to enter their opponent's penalty box. But, they were lucky. Their opponents were unprepared for their attack for a moment. And they scored the only goal from their striker, Lewandowski, to get three points. And their coach, Flick, paid attention to all positions. He knows their midfielder did not urgently need a small change.
The middle is an important line in forming attacks, and the absence of Araujo, Olmo and De Jong was noticeable yesterday, although De Jong can be said to be absent for a long time, but it was expected that he could be in the application for this game. Nothing will change for the next game with Osasuna, but Yamal can still be added to this list, he has a minor injury, so his participation is still unknown. The biggest problem is with the goalkeeper, perhaps in the match with Getafe it was not so noticeable, but with a more attacking opponent it will be noticeable.