For his first goal, O'Reilly chested the ball down to Marmoush by the halfway line then took off alongside the Egyptian, firing a first-time strike inside the near post from just outside the box. For his second, he took a leaf out of Haaland’s book, timing his run perfectly to meet the Norwegian’s cross from the right-hand side and head home.
He was inches away from grabbing a first-half hat-trick, too, just failing to get the right connection when he slid into the area to meet a low cross from Marmoush.
"Because of his versatility, his energy, his football intelligence, just 20 years of age, what he's doing is remarkable," said former City star Micah Richards on Match of the Day. "It was his willingness to run and it's not only that, it's the timing of his runs.
To see someone from the academy getting this opportunity and taking it. He's an England international now who can play midfield and left-back, so that versatility is going to be good for the country as well. His all-round game was excellent. It was a perfect performance for a player who is so young, who is having to adapt from left-back and now playing as a No. 10."
Wayne Rooney added: "Pep's seen something in him, Pep's seen him every day in training and has realised that he can play all over the pitch."