One of the great success stories of Jurgen Klopp at Liverpool is the players he has developed during his tenure. Compared to rival teams, Liverpool haven’t spent hundreds of hundreds of millions, but instead, nurtured top talent and transformed them into world-class stars. When the new coach comes in, amid talk of Feyenoord manager Arne Slot, that’s one of the big things he will have to overcome. Trying to overachieve with players. Not buying ready-made stars, but those on the edge, showcasing great potential and then transforming them into world-beaters. Over at Manchester City, a certain Pep…