Erling Haaland has revealed that Pep Guardiola can be very upset at a certain thing. READ MORE: Who is Erling Haaland? Step into the world of Man City’s record-crushing goal machineHaving worked with Pep Guardiola for two seasons, the Norwegian striker has an insight into his personality and working habits. Despite Erling Haaland being a global superstar, the Catalan tactician does not make exceptions for any of his players. In City’s 3-1 win against Burnley, the £378,846-a-week man was spotted berating Haaland at half-time. Haaland shares what can be a “big problem” with GuardiolaAfter Manche…