Xavi for me is B-level in world football terms. He isn't the worst and he gets a lot of unfair slack when his results record is pretty good, however, I don't see him as a manager who could make that final push to say CL glory or to be the best team in the world even given we provide another big budget summer. I believe given time that Arteta, Nagelsmann, Inzaghi etc could be that in a post-Pep era.
Xavi has done a good job rebuilding the organisation and bringing structure back to the dressing room and club, so if we do have future success, he is a big part of it naturally, he laid the foundations. But I think if nothing is won this season, someone else needs to be hired to build on those foundations and to take it to the next level, a world-class level, where we can compete against the best in Europe for titles..