I don't understand people's infatuation with Denis Suarez or Oliver Torres. People seem to think this is FIFA or something...
Denis Suarez, Rafinha, and Sergi Roberto (and I absolutely love Sergi), will always be second tier players in Barcelona. There's no doubt about that. Rafinha will leave in a year to find playing time elsewhere. Sergi is like Pedro in that they work very very well in the Barcelona system and they are very talented, but Pedro was no Suarez, Messi or Neymar. Sergi is no Iniesta, Busi or Xavi. Sergi will leave in a few years to find playing time elsewhere like Bartra and Pedrito. It's just how it works. You have to be world class to be a started for Barcelona. Denis Suarez is not that, nor will he ever be that. He'll show flashes of brilliance, but it ends there.
I'm happy with Umtiti, I think he has potential to be Abi-like. I guarantee we don't pick up and RB this season to see what Aleix can do back there. Next summer Barcelona will buy Bellerin.
In regards to the midfield, I think buying a player like Koke or Pogba is what Barcelona need. Someone who can change a game, control a game, and provide balance. Iniesta himself admits that he is getting older and will soon not be the same player he once was. I really hope Denis Suarez isn't the solution to this.