The 20-year-old scored twice and played a role in two other goals as United secured David Moyes' first win in charge with a 5-1 victory over the A-League All Stars on Saturday.
He is now keen to become a regular fixture in the Premier League champions' starting line-up, but knows it will be a tough challenge.
Speaking in Australia after Saturday's game he said: "This is the hardest club side to in the world to break in at, normally they send you out on loan and then you have to come back and bide your time.
"Hopefully I can come straight through. I believe in myself and I've got to start to believe in myself more day in and day out."
The Warrington-born midfielder, who spent time on loan at Leicester City last season, is hoping to follow in the footsteps of other youngsters who have come through the ranks at Old Trafford.
"I've known Danny [Welbeck] and Tom [Cleverley] since they were young as well and they were at United at my age and they've pushed on and progressed," he continued.
"Hopefully I can follow their footsteps. I'm trying to integrate myself into the first team very slowly. I'm maturing now and it's coming together so it's good."