I think, Barcelona will soon loose their peace to sign in more potential players that will help them to maintain that first position in the la Liga league competition next season, so that their coach will experience another honor from the fans again. If Barcelona coach can release money to bring Kylian Mbappe in this summer, I think, Real Madrid or other strong teams will not challenge Barcelona next season because their defensive and midfield is very strong for their strikers to achieve many goals in this season. Since Karim Benzema has left Real Madrid to another team and kylian Mbappe manager is not willing to release him to Real Madrid, show that Real Madrid will still face the Same challenges they experienced last season.
I would not dream that Kylian Mbappe would become a Barcelona player when Barcelona are not in good financial condition. Barcelona can defend their title next season regardless of whether they are not as good as other teams in terms of transfer activity, but I believe Barcelona still has the quality that can be expected.
Xavi can adapt the right strategy to the depth of the squad he has, but of course he will have to work hard to defend the title with the few players he has. Barcelona proved that last season, but I won't guarantee Barcelona can do the same next season.
There is no way, in reality, Barcelona will be able to bring Mbappé into the squad. The harsh reality lies in Barcelona's precarious financial situation, rendering such a possibility utterly implausible. And we all know that Mbappé is asking for a very huge money from any club that he is going to go to. Barcelona certainly cannot afford that type of money. If Barcelona could afford to give that type of money to a single player, I am sure they wouldn’t have needed to sell the TV rights to bring in new players previously. So no I don’t think that is happening. If Mbappé is actually going to any club, it is going to be Real Madrid.