Gavi is one of Barcelona's young talented players. Last season we saw erratic performances from Barcelona's midfielders. One of the reasons for this was the injuries to Gavi and De Jong. Had these two players not suffered injuries, we might have seen stronger and more consistent performances from Barcelona.
Flick's main task this season will be to get Barcelona's young players experienced. Barcelona have a number of talented players in their squad. If these players become experienced, and can adapt themselves well to Flick's match tactics, then the Barcelona team will be stronger. Barcelona will not need to buy experienced players. But working with young players is very difficult. Still, Flick is an experienced coach. Hopefully he will be able to make Barcelona strong again.
Agree. Gavi is a talented young player that Barcelona currently has, although currently he cannot bring Barcelona to glory again in difficult times, but one day he will definitely be able to do it and the good news is that he has recovered from his injury, this of course makes Hansi Flick feel happy. Gavi should be grateful to coach Ronald Koeman. Because of Koeman, another quality young player like Gavi could be born, not only for Barcelona but also for the Spanish national team.
Actually, Barcelona doesn't need to buy players from outside. If they are willing to look for La Masia and give confidence to young players, then Barcelona can be successful without having to buy expensive players. Indeed, as you said, buying experienced players is important to accelerate Barcelona's strength because working with young players is difficult. However, the problem is that Barcelona is currently experiencing a financial crisis so using La Masia players is the only solution.
I think Flick's first season will help barcelona out of financial difficulties, and next season he will start to win a lot of trophies with barcelona.