Barcelona is one of the most successful football clubs in the world, with a history of success and dominance on the pitch. However, despite their impressive record, they have also been criticized for some weaknesses in their defense.

One of the biggest concerns for Barcelona fans is the club's inability to keep clean sheets. In the 2019-20 season, Barcelona conceded just six goals in 36 games, but this was still more than any other team in La Liga. The club's defensive issues were highlighted by their poor performance against Real Madrid in the UEFA Champions League quarter-finals last season, where they conceded two goals in extra time to lose 4-3 on aggregate.

Another weakness that has been pointed out by analysts is Barcelona's reliance on set-piece situations. The club has struggled to defend corners and free kicks effectively, conceding 55 goals from these types of plays in the 2019-20 season. This has led to criticism of the club's defensive organization and tactical approach.

Despite these criticisms, Barcelona remain one of the best teams in Europe and continue to dominate their league. However, it remains to be seen whether the club can overcome their defensive shortcomings and maintain their dominance on the pitch. With new signings like Lionel Messi and Antoine Griezmann expected to improve the squad, it will be interesting to see how Barcelona fare defensively in the upcoming season.