And that there is the big issue because already the team is in deep financial dept and you as a coach coming to new club you will definitely need to access the signing of new players and some youngsters even to be able to actually implement your own style and way of playing and for Barcelona that's a really big task and this particular issue is what I think will draw Barcelona backyard.
As Barcelona are now in financial crisis. So we know they won't be able to sign any new star players. Hansi Flick will certainly have to work with Barcelona's current squad.
I wouldn't call Barcelona's current squad weak. There is no dearth of talented players in the squad. Lack of experienced players. And I think a coach like Hansi Flick is able to help the players improve their experience. Barcelona's attacking young players Ansu Fati, Torres, Raphinha, Vitor Roque and Yamal are all promising players. If Hansi Flick can develop these 5 players as experienced, then Barcelona will benefit greatly. Even by selling players, Barcelona will be able to solve most of their financial problems.