I felt Pedri should make himself more available to receive a ball sometimes. Several times I have seen him running away from the ball when Alba or somebody did a thrown-in from the left touchline, as if the ball was going to be thrown to him that far away or he would be in a more advanced position to receive the ball from another teammate; or sometimes during open play he ran into a relatively crowded area anticipating a pass (which might result in the ball being dispossessed and a turnover).
Very minor, it grows with the experience.