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It doesn't matter how far you have watched Barcelona's development, but if you look back at their ups and downs, starting from the financial crisis to building the ideal team at this time, still for next season it might still be ideal to occupy the top position of the La Liga standings, but in the UCL of course the challenges are different. Likewise with rival competitors whose clubs have developed earlier. The point of Barcelona's renaissance began when Xavi arrived and tried to fix the mess.
Barcelona only needs to recover finances in order to maximize opportunities for hunting players. Xavi was just doing what he could so if he didn't come then it might not have had such a great effect. Like it or not, Barcelona needs to be grateful for the services that Xavi has performed so far, both the advantages and disadvantages.
Of course Barcelona and all of its management deserve to be grateful for the achievements brought about by Xavi's presence as the main coach. Xavi has built the quality and confidence in his players to play at their best since he was brought in, he has taken Barcelona to a different level compared to previous coaches.
Last season Xavi and his team managed to win two domestic titles, but unfortunately they were still too weak in the Champions League. Barcelona must improve and continue to try their best in the Champions League, but to be honest it definitely takes extra time and effort.
Yes Xavi was the actor behind the improved performance last season, and managed to present the La Liga title in his second season, after previously he brought Barcelona to be runner up after experiencing a tough season. But previously Xavi was rumored to be on strike, because he demanded a raise, and now that news is no longer heard, maybe Barcelona has agreed to what Xavi wants or whatever.
With his new status as a coach and not much experience, what Xavi Hernandez has done for Barcelona is something to be applauded, and he has managed to answer all the doubts on his arrival at Camp Nou.