It's difficult at the moment for Barcelona because Inter's chances are obviously very big now seeing that Barcelona are still 3 points behind and Inter will face a team that can be said to be the weakest in the group, namely Plzen clearly have a chance to widen the points open to Inter because in any case Plzen is now like only as a complement in this group and Inter can clearly win and destroy the hopes of Xavi and Barcelona to qualify for the next phase.
I see Barcelona are at the top of the table with five wins in a row so what are they struggling with? they are now easy to always get a win in every game, Xavi only needs to prepare their team to face Real Madrid on 16 october this because this is an opponent that is not easy for Barcelona.
Easy? I don't think so, after losing some of their core players to injuries it's clear that this has had a big impact and it shows because they're really struggling to score goals in the games they play.
In the last 2 matches in La Liga they did manage to win, but this does not cover the fact that they are struggling and that is evidenced by they only scored narrow wins against clubs that are far below them.