Former manager Ruben Amorim initially promoted the teenager to senior training sessions, where he has remained a regular participant.
Uncertainty remains over striker Chido Obi, who did not play against Wrexham despite full second-half squad rotations.
United officials are evaluating whether to retain him or approve a loan deal in the coming weeks.
Winger Ethan Ennis missed the pre-season squad after a minor training injury requiring several weeks of recovery.
He had a 45-appearance loan spell with Fleetwood Town in League Two last season, after which United extended his contract by 12 months.
Goalkeeper Solomon Honor was loaned to Southport for the season.
>>> Katarina Johnson-Thompson and Key Stars Withdraw From Commonwealth Games
Under the agreement, he will maintain regular training at Carrington as a training goalkeeper while competing in non-league fixtures.
