Manchester City boss Pep Guardiola says John Stones can be as good as he wants.

Stones has found some of his best form in recent games.

Guardiola said ahead of their Champions League clash with Porto, "Absolutely anything. After five years together we know eachother incredibly well. John, it depends on him. We know he's got incredible skills. It depends on him to maintain this level.

"He struggled the last season, he needs continuity to be fit, training, be ready. John could not for different reasons. Since day one he played against Wolves and played excellent. Unfortunately he was injured, struggled to come back because Ruben gave us stability. We are delighted especially for him. He's a special guy, so sensitive. All of the backroom staff are so happy for him."