The Mirror says Klopp was blown away after watching Musialowski in training.
Musialowski, 18, has scored 133 times in 88 games back in Poland, which helped persuade Liverpool to bring him to Anfield from SMS Lodz.
Reports have also suggested the youngster skinned Fabinho in training, much to Klopp's amusement, by nutmegging his senior teammate.
And the incident left Klopp very impressed with the young player.
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