The real evidence of Haaland is already we can see. He became the top scorer in the EPL and UCL.  Even earlier this season he has made 2 goals against Burnly.  At 23 years old, he has many years to set new records. With a note that he was not injured. Next Man City will play Sevilla at Karaiskakis Stadium, Piraeus, Greece. This match is contested for the UEFA Super Cup trophy.

Source: https://www.nbcsports.com/soccer/live/manchester-city-vs-sevilla-how-to-watch-uefa-super-cup-live-stream-link-preview