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.