He’s fantastic, and will also help us to keep possession/build attacks as he isn’t the typical high-possession turnover winger. He’s more like Hazard/Bernardo Silva - and would be like adding a classic 10 to the team in some ways.
I do have a feeling that Amad will be special, and it isn’t as if Amad is 18 and Sancho is 28 either. For that reason, I’d still choose Haaland. Rashford will never be left out of the team on the left, so Sancho, Greenwood and Amad will try to work out the RW between them - and you would think Sancho would just start every game. That said, I do think if the players develop, they will also out pressure the 10 role. The Amad/Sancho type wingers are like 10 hybrids - and if they are world class players who can’t all fit into the XI, I think they will also compete for the 10 role over time.