Manchester united will play against big teams like Manchester City, arsenal and Barcelona. Manchester United performance is not poor, I think they are ready to play against any tesm with their form of performance.
Manchester city was not playing in europa league. You shall not go out of topic. Barcelona may be defeated by united. MU's performance is the best in EPL now. Ten haag has been using his magic to change the team to be even better and better. it seems like that he will become the new alex ferguson in MU. Mu has been preparing the best performance to face the match against barcelona.
Barcelona can be considered as a big wall that was always preventing MU since a long time ago. it's the time for MU to pass it
Saying Manchester United would defeat Barcelona is just as if you are writing down your will and you want it to be as such but football is far from that point, forget that Manchester United is picking up and doing well in their recent matches, there is no single reason that will stop Xavi from winning the Europa either and if not for their inability to make it out of the group stage of Champions League, they wouldn't be here in the first place because Manchester didn't make it there but it is what it is, their next month meeting will determine who winner but both of them doesn't have a factor right now that will hinder their chances.