A new documentary about Jurgen Klopp is promising “unprecedented” footage of his final months in charge of Liverpool . Doubters to Believers Liverpool FC: Klopp’s Era, a four-part series, will be launched on Amazon Prime on February 28 - with the first trailer released on Tuesday. In it Klopp, who gave his first press conference as Red Bull's new head of football last week, says: "You either never stop or you stop too late. It's easy to fall in love with this place, you are part of a family." A