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Jurgen Klopp has told kicker magazine that he believes the "war of attrition" in the Premier League is a reason for the lack of relative success in European competition.
There have only been two English sides in the semifinals of the Champions League in the past five seasons.
Before taking over as Liverpool manager in October 2015, Klopp wondered about the poor recent record, but says he can now fully understand the difficulty in juggling two demanding competitions.