There was a loss for Xavi because he got 2 yellow cards against Atlhetico Madrid. This allowed Xavi to miss 3 matches. Against Las Palmas, Cadiz and Real Madrid. A disadvantage, because at the moment Barcelona is in improved form. They haven't lost after playing Villareal.
It's an easy fixture for Xavi's Barcelona, I don't think Las Pallas and Cadiz will put much pressure on Barcelona in their current form. The big derby El-Clasico, which will take place later, will be a big test. They still have the possibility of catching Real Madrid on paper, but Xavi needs to go through this process perfectly.
It is hopeful that there are not many missing players in the squad. They overthrew Atletico Madrid, now it may be Real Madrid's turn, who knows.