Indeed and whether Xavi really "revived" Barcelona is also far-fetched. In fact I do believe that Xavi may never be able to bring Barcelona back to where they come from. I can't even judge Xavi's qualities as a coach. It doesn't feel to me as if he has the same aura of the real heavy weights like Guardiola, Klopp or Zidane (etc., incomplete list of course).
But Barcelona might even feel more pressure to win than Napoli because they are most likely also more broke and need every penny they can get...
I'm still not convinced. Barcelona are in a situation, I won't say that any coach changed the course, but they were so bad for the team they have, it was difficult to get worse. I think the two games against Galatasaray and then with Real Madrid, you can really understand that. Even so, I think that only in the next season will we see if Xavi is the right choice or not.
Xavi's project has only just begun, although the barcelona performances under Xavi were much better than Ronald Koeman, we can't say that Barcelona has bounced back, but we can't say that Xavi has failed with Barcelona.
Barcelona beautiful days began to look, Xavi managed to bring Barcelona back into the Champions League zone, this is just the beginning, the Xavi project is not finished yet. Next season we will see how Barcelona goes through every game with Xavi, only then can Xavi will be said to be successful with Barcelona or not.
Facing Galatasaray the next test for Xavi, if Barcelona can show a charming appearance when they beat Napoli, Barcelona will step into the next round.