With all the problems that Barcelona at that time facing when Xavi took over the club from Koeman, of course ending the season in second place in La Liga is an extraordinary thing for Barcelona, if Koeman was still coaching Barcelona at this time I think even Barcelona would be outside the top 10 right now, but they were lucky enough when they were down and Xavi come to be a hero who was able to make them rise to what they are today.
We will see next season if Xavi is able to maintain his good performance next season. Next season, several targets may become a big priority for Barcelona, one of which is to win the Laliga Trophy from Real Madrid. Barcelona is now looking for a solid sticker figure for next season. Lewandowski is their target and I think the hopes of the Barcelona fans to see Barcelona go wild in front of goal will come true again if Lewandowski comes to Barcelona.
Barcelona is very serious about building a team for next season, several players have been targeted by Barcelona, some have been agreed, some are still in negotiations. Xavi will try to bring Barcelona success in his second season as coach at a club that has made his name. Finishing second in his first season as coach became a bright spot for Barcelona's revival, because when Xavi took over from Koeman, Barcelona had been thrown in eleventh place.