The off-beat character was confirmed as the club's new manager on a three-year deal to take control of the Reds.

But in an unconfirmed home video which has gone viral, Klopp is seen on a swing before slam dunking a children's basketball ring.

It could very well have been the charismatic 48-year-old, who has been out of work since May when he finished a seven-year reign at Dortmund to take a sabbatical.

Maybe the dunk is his way of celebrating a return to gainful employment.

If it is not Klopp then the German has a doppelganger out there. After sinking the basket, the person – wearing a blue baseball cap – then pulls off a marching dance and handstand in celebration.

Klopp replaced Brendan Rogers at Liverpool, who was sacked after three-and-a-half years in charge. Klopp last managed Borussia Dortmund for seven years.