Hansi Flick strategy to increase the number of goals did not work. Rashford was brought on in the second half of the match but he did not find the net and his performance was not good. Yamal and Raphinha played excellent football in the match but they should have scored more goals. In my opinion the fans expected lot from Barca to win and the number of goals was even more expected.
The issue with rashford currently, is one which I will say is very much understandable, so far his performance has not improved just yet but he shows he is really zealous and wants to improve enough to be with the team. The rest of the other team mates did performed well as expected of them. Yamal and raphina are in their prime and they are really making the most of it which is good for them personally and for the team.
I think Marcus Rashford will be used to rest Raphinha or Yamal in some matches. Barcelona will have a busy schedule once the Champions League starts. Therefore, they will want to constantly rest their key players. I understand their point. Marcus Rashford is currently in the process of adapting to the team. If he gets through this process quickly, he could fit in more easily at Barcelona. He could also be a very good substitute and become a wildcard.