By Jonathan Wilson Despite a season filled with blunders and false starts, Jürgen Klopp’s side showed signs of its old self in stopping the Premier League champions’ well-oiled machine. An afternoon of heavy rain and high emotion, of frayed tempers and exquisite drama, of Manchester City fallibility and, if not necessarily sparks of rebirth for Liverpool, then at least signs that some heat remains yet in the old embers. By the final whistle of a 1–0 Liverpool win, Jürgen Klopp had been sent off, a reinvigorated Mohamed Salah had scored the only goal and City’s unbeaten record this season had g…