The current condition of Barcelona is not just due to some mistakes being done this season but Barcelona was decaying from the inside for years. They were doing more politics recently and being Més que un club they forgot how to make a good football club.
Not just the barcagate, Barcelona made controversies on release of both Messi and Neymar mostly because they were struggling to finance the team as they had accumulated huge debt. They would have performed better if they had spent money on players than bribing the referees.
Barcelona performance decline and it's quite obvious, why would an elite team like Barca fight to accumulate points when there mates, Real Madrid are winning matches without stress. Xavi Hernandez have even decided to leave the club at the end of the season because he's seeing no progress at Camp Nou. Barcelona originates from the team's board, they've failed to make good impression and I've watch and observed the team from a distance, they're suffering to fit into the system and there's definitely no good extent to see them back to triumph path in football.
Xavi Hernandez was a former captain of the Barcelona team and not just that he's a former captain but also a very passionate fan of Barcelona who always wants Barcelona to succeed. Since he took over the managerial position at the club, things haven't been as they used to be at the club but he was still doing his best to make sure Barcelona remains as one of the top performers in not just Spain but in Europe. Last season, he led the club to lift the Spanish La Liga title but since the start of the season, Barcelona have been struggling to win games as a result of numerous injuries to the key players of the club as well as the club's failure to sign world class players.
His decision to leave the club at the end of the current season isn't a bad idea especially for his young managerial career