Manchester City’s English striker Raheem Sterling (centre) runs with the ball during the UEFA Champions League round of 16 second leg football match against Schalke 04. (Oli SCARFF/AFP) City had snatched two late goals to win the first leg 3-2 and they made the most of that fightback with a ruthless demolition job at the Etihad Stadium to clinch a 10-2 last-16 aggregate victory. Sergio Aguero’s penalty opened the scoring in the 35th minute and the Argentine forward netted again soon afterwards before Leroy Sane, who also contributed three assists, struck against his former club. Raheem Sterling, Bernardo Silva, Phil Foden and Gabriel Jesus all scored after the interval to complete City’s biggest home win in the Champions League. Guardiola’s side, who lifted the League Cup in February, remain on course for an unprecedented quadruple, sitting one point ahead of Liverpool at the top of the Premier League before this weekend’s FA Cup quarter-final at Swansea. “After the first goal we played at a good level. We were serious and we did the job,” Guardiola said. “In the last 15 minutes of the first half and in the second half we were incredible. We were playing quick, dynamic in the…