By Miguel Delaney You wouldn’t quite call it an epiphany from Jurgen Klopp, but it was a distinctive evolution in his thinking. At an early point in his time at Liverpool, the German realised his football would have to become even more nuanced than the raucous approach that was so successful at Borussia Dortmund. Klopp knew he needed more control. Across the northwest of England, although largely influenced by his time at Bayern Munich, Pep Guardiola was soon coming to the opposition conclusion. He realised his control-based game needed to be complemented by more directness, more chaotic electricity. The combined effect of this is that it means both sides now play hybrid approaches, and that their meetings represent the peak of the game. City-Liverpool has overtaken Barcelona-Real Madrid as the highest-quality fixture in world football, becoming the match where the sport’s latest tactical innovations are displayed. And that at an utterly frenetic pace that is often bewildering. That is apt because this has been the decade where the tactical development of the sport has evolved at a faster rate than ever before. It is exponential, with each new idea very quickly being absorbed into the previous to pick up more…