James Ward Prowse (305 league games), Oriol Romeu (324), Che Adams (299) and Stuart Armstrong (427) have 1355 league games of experience between them. A large number of them in the Premier League. I hope all of them will be a part of the team this season and don't feel yet the imbalance between potential and experience. I somewhat understand the concern about lack of experience in defence, but KWP and Perraud seem intelligent players and have close to 200 league games between them.