I made Jurgen Klopp cry after deciding Manchester United were bigger than Liverpool

"He now plays 20 minutes at Manchester United on the left wing.

“My heart breaks. Really, I have tears in my eyes.

"He’s an offensive midfielder with one of the best noses for goal I ever saw."

There aren't too many Manchester United players Jurgen Klopp would rave about, but back in 2013 it was a very different story.

Long before the charismatic German went on to rile United supporters with his restoration of the red half of Merseyside he was making waves in his homeland, with an exciting Borussia Dortmund side who had knocked Bayern Munich off their perch.

Central to that team was the attacking talents of Robert Lewandowski, but arguably the greater force was the unassuming playmaker pulling the strings behind him: Shinji Kagawa.

Born in Kobe, Japan, Kagawa started playing football at the age of five, going through the ranks of his local youth sides before he was talent-spotted by Cerezo Osaka at the age of 17.

He'd spend four years at Cerezo and rise to prominence in 2009 when he finished as the top-scorer in the J League 2, the second flight of national football in his homeland.

Dortmund were one side alerted to his talents and moved swiftly to activate a €350,000 release clause in his deal which would allow him to leave the club with no questions asked for a shot in Europe.

Klopp had just led Dortmund to fifth in the Bundesliga, qualifying for the Europa League as a result, using the money to bring in Kagawa along with the likes of Lewandowski from Lech Poznan and Lukasz Piszczek from Hertha Berlin.

It was to be the perfect match for an exciting young manager and his exciting young squad as Dortmund raced to the Bundesliga title, with Kagawa named in the league's team of the season despite missing half