Comparing Pep Guaridola with Xavi alone is a mistake because they are not suitable to be compared to each other. The careers of the two are so different that it would be inappropriate to compare them. It's not that Barcelona doesn't want to look for a new coach, but we know that their finances alone are unable to provide the best facilities for their players to date. Instead of wasting money, it's better to use what is already available. Xavi may not be a good coach, but is there another coach who is willing to manage a club with minimal finances?
There is no choice for Barcelona, if they want to improve the squad then improve their finances first.
So far we often compare players with other players, as well as one coach with another coach without looking at the factors causing their success so far, Xavi and Guardiola are certainly not worthy of our comparison because indeed they have different abilities and intelligence in coaching a team, so far we know Guardiola is a coach who is quite experienced and able to bring the team he coaches to become champions, The number of trophies he managed to get when coaching Barcelona and Manchester City certainly makes us consider Guardiola a great coach so far.
As for Xavi, it is precisely the novice coach who coached Barcelona so far has only been able to provide one La Liga trophy, but have we all thought if Xavi coached Barcelona during his heyday like Guardiola did?
Of course Xavi might be able to surpass all the achievements of Guardiola at that time, Xavi managed to bring Barcelona La Liga champions in his first season coaching Barcelona which is in poor financial condition as it is today, let's imagine if their financial condition was stable as in the past?
So far, Xavi has coached Barcelona with poor finances but is still able to make Barcelona compete, while Guardiola has Isn't only coached teams that have very strong finances?