despite the good head to head record being enjoyed by Barcelona it is been noted that since 2012 Bacelona has won manchester united 4times against manchester united 1.
This is true that Barcelona have had several wins over Man United , but I do think that this time around it's going to be a different ball game, looking at Man United form and Changes over the years in both clubs. Barcelona had this incredible coach Guardiola and players, Lionel, Xavi, Iniesta and more compared to what they have now, basically a lot of things has changed which could affect the result too.
Yes, it's true that Manchester United can now be said to be in a prime position considering the last 3 games they were able to win, maybe even then Barcelona will accept Manchester United's victory gracefully, and maybe in the minds of the Manchester United squad, Barcelona is not a solid wall that difficult to penetrate or torn down for now.
I think you shall try to understand how wonderful a record is from barcelona against MU. Barcelona is always dominating any matches against MU. Barcelona was only losing once. MU is now in the prime condition. The chance for MU to win the match becomes even bigger since buquets and dembele may absent from the match against MU. that gives MU so many advantages caused by barcelona will be using raphinha as replacement for dembele. Barcelona will not able to perform with the main squads that already made by xavi.
Sabitzer will be playing against barcelona. Weghorst will become the main striker for MU. The unimportant players like Axel Tuanzebe dan Martin Dubravka already removed from the squads for europa league.