Y-
Barcelona have better head-to-head record against Manchester United and it is one of their advantage with history voice and mentally support for their players. However, they are actually stronger if we count their performance in La Liga, their ranking there with what Manchester United have in Premier League.
As long as they are still consistent to play optimally and give high pressure to Man United, I am sure that they are able to.But, we cannnot also underestimate Man United, with Casemiro, it will be quite different, moreover, he was in Real Madrid which has been usual to Barcelona. In fact, this wil be much more interesting. cannot
Xavi is a young coach but he has a long and successful player career with that he has a lot of experience with tough matches.
Indeed, thisreally gives advantages to make his best tacttic taken from his experiences. The tactic may be different, but indeeed, he is smart enough to arrange it although he is new as a coach. But, he must manage and control his squad emotion to be under controlled and on fire.