Barcelona is the leader of the greatest European leagues that have more goals conceded
Barça is the leader of LaLiga with three points beyond the second and is the top scorer of the league table with 31 goals. However, the team has conceded 19 goals in the first 13 matches of LaLiga and it meants that Barça is one of the greatest European teams that have received more goals. Manchester City just conceded 5, Juventus 8, Borussia Dortmund 13 and Paris Saint-Germain 7.
Against Betis, it was the first time in 15 years that Barça received four goals playing at home. Another negative stat is that the team have not keep their own goal in goalness in ten matches in a row. With that 3-4 lost against Betis in the Camp Nou, Barça did not concede that amount of goals since 1973/74 season.
There are too many matches in the current season that Barça have won but without keeping their own goal in goalness. Inferior rivals like Huesca, Girona, Leganés or Sevilla have scored two goals against Barça. Also, in just the two first matches, 3-0 against Alavés and 0-1 against Valladolid, Barça did not concede any goal.
The main problem could be in the back wings Sergi Roberto, Semedo and Jordi Alba that are much more ofensive than defensive and then they let a gap in their backs. Also, because the team is getting used to the new line-up with three midfielders and three forwards. Rakitic, Busquets and Arthur are knowing each other's way of playing and have to improve in their task to avoid counter attacks.