I don't think it was because Xavi Hernandez failed to defend the Spanish La Liga title that the club won last season that made the club management sack him. Few months ago, Xavi Hernandez had publicly announced that he's going to leave Barcelona at the end of the season and even reiterated his stance when he said he was still going to leave even if Barcelona wins the UEFA Champions League competition but after so much meetings and pleas from the club management, Xavi Hernandez changed his mind and announced he's not going to leave again.
Recently, there's been some secret disagreement between Xavi Hernandez and the Barcelona president and that was the reason the club decided to sack him and announce his replacement immediately. I think it's a total disrespect to Xavi Hernandez by the club management to try convince him to stay back when they know they'll still sack him.
I'm happy that Xavi was able to win the laliga league tittle as a coach for Barcelona, he met Barcelona in a terrible condition that he was able to fixed the club back to normal. I just know xavi is a good coach who was able to manage the players he met in the club to win the league for Barcelona last season. Barcelona should have tried their best to keep xavi in the club because it is not easy to get a coach that can revive a team to win the league. The most important important thing xavi as coach for Barcelona was that he was able to achieve something for the league and it is a great achievement for him that will boast is career.
If Barcelona was able to provide the kinds of players xavi wants in the club, Barcelona would have done very well in laliga and even in champions league but xavi was able to manage this players to win the league last season, I just hope Barcelona won't regret sacking xavi because having a good coach in a club matters a lot.