A prolific Polish striker linked up with the German coach from Lech Poznan in 2010.
He quickly settled in the
Klopp pushed his squad on the training field and Lewandowski felt there was a need for him to put in extra hours in order to meet the expectations of his manager and Dortmund team-mates.
Life was not easy, though, with Lewandowski telling BBC Sport of his time in Dortmund and life under a coach now chasing down the Premier League title at Anfield: “The first two years at Borussia Dortmund, my finishing was not like it is now.
“After every single training
“It did not matter what I did with the team, I knew I had to stay after training to do things for myself.
“Sometimes I did it without a goalkeeper, who might have been tired or not have time for
“I remember the first six months at Dortmund, the training was very hard under Jurgen Klopp. I was very young and wanted to show everyone I could give 110% in every training session.
“After two or three months, I was very tired and could not show all my skills. It was too much for me and I needed three months lighter training to get back to form.
“When I think about it now, I learned a lot.
“After the first few
Lewandowski has been reunited with Klopp in this season’s Champions League.
Bayern played out a goalless draw with Liverpool in the first leg of a heavyweight last-16 encounter in Europe’s elite club competition.
The return date of that tie, with a quarter-final spot still on the line, is set to be staged at the Allianz Arena on March 13.