Klopp won his first title with Liverpool last season, capping off the Reds meteoric rise over three seasons with a Champions League medal.
"Jurgen is a manager every player would love playing for. You can see how much fun his players have playing under him. I met him once, he is an amazing guy," Rooney told Sport Bild.
"His only mistake is that he works for LFC and is successful there.
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