Both Bayern Munich and Barcelona have both suffered defeat. Barcelona defeat was due to a red card that made them to play with 10 men against Monaco. Barcelona is weak when it comes to using 10 men to play against their opponents because the young players will be filled with tension and lacks the experience of playing with a man down.
I will not be surprised if Barcelona wins this match despite that head-to-head, they are the favorite. The secrete of winning Bayern and prevent them from scoring any goal has been revealed by Leverkusen and Aston Villa but I don't think that Barcelona will concentrate more on their defense because they're also a club that love dominating matches like Bayern. It will be strong match for both clubs.
Both teams have a dominant way of playing. Barcelona can be more favored, but I'm just worried about their defenders who I think are not very strong this season. There are still gaps even though in some matches it was closed by Barcelona's ability to dominate ball possession. But facing a strong opponent like Munich is clearly a tough test for Barcelona. It will not be easy to win the match. Before the match against Munich, Barca must face Sevilla who cannot be underestimated. Likewise, the match after facing Munich, Barca will face Madrid. They must be able to maintain their confidence.
For now the situation is interesting especially Barcelona's track record when facing Bayern is not going too well which makes this an interesting thing to wait for.
Now Barcelona have Flick, who of course is very familiar with Bayern, especially since he also in the past was a coach who destroyed Barcelona with a fairly landslide score when coaching Bayern so this is indeed a good addition to strength of course.
Can't wait for this match because after all this will be a match between revenge, prestige and of course reunion where there are several players who will reunite with their former clubs which will add to the drama in the match later.