A total defeat by 4-2... It was really a disaster for Barcelona after such an incredible start. 
Hansi Flick took full responsibility of this loss on his comments related to the game. People criticized Yamal's being in the substitutes. But I understand the manager on this. Because he has to rotate players as the schedule is very busy. It is the same situation for any team competing in European tournaments at the same time.
I have said in the previous post, Flick's decision is very risky and he already knows the end result with that decision. considering the situation, there are not many options for Flick, with many injured players, a tight schedule, he took a risk with his choice. the worst is his defense, I'm sure Flick will find a way to overcome it. Hansi Flick took full responsibility of this loss on his comments related to the game. People criticized Yamal's being in the substitutes. But I understand the manager on this. Because he has to rotate players as the schedule is very busy. It is the same situation for any team competing in European tournaments at the same time.I have the feeling that Coach Flick was too superficial with his opponent Osasuna. Not only did he put many substitutes on the field, but the German strategist also saw this as an opportunity for young players to show their ability. Especially the defenders: Barcelona's central defenders in this match include Pau Cubarsi and Sergi Dominguez, one is only 17 years old, and the other is 19 years old. Not to mention, left-back Gerard Martin is only 22 years old, belongs to the Barca B team, and has just been promoted to the first team not long ago.
But we should respect his decision anyway, Barcelona is still on the right track, ready for the next challenge in the Champions League.