If we look at Barcelona's performance since the start of last season, we can see that Xavi is actually a good coach, he has a good leadership spirit, it's just that the competition with Madrid is very tight, Madrid has more of a winning mentality than Barcelona, regarding whether Flick will be able to bringing Barcelona to be the last in La Liga, I also doubt it, just being able to finish in the top 2 would be a good achievement for Flick.
Barcelona president, Joan Laporta did the right thing, he no longer needed the services of Xavi Hernandez and so the Spaniard had to go and create chance for Hansi Flick who's also one of the best coach in the European football era. Xavi Hernandez is a good coach but sometimes these preferred coaches becomes the problem of the club. Barcelona failed to make the good impression they did the previous season, they've struggle to win games and this is unlike them in the past seasons.