Ten youngsters have signed scholarships with the club ahead of the start of the 2021/22 development season.
Del Geary's side enjoyed a successful campaign last time out, finishing third in the league and reaching the quarter-finals of the FA Youth Cup.
Several players who played a part for the team last season have now signed scholarships with United, including striker Will Lankshear who became a regular starter after joining from Arsenal in January.
Owen Hampson who joined from Manchester United in January has also signed a scholarship, as have United's own under 16s Johnny Oluleye, Levis Pitan, Luke Faxon, Sai Sachdev, Charlie Staniland and George Dickinson, the latter three of whom all made their under 18s debuts last season.
Ben Drake, who joined the club on trial last season, has also signed a scholarship, as has midfielder Sydie Peck who joined the club this summer from Arsenal.
Head of Academy, Jack Lester, said: "We've had some talented players coming through on their journey with the club from within and Steve Holmes has done a great job of recruiting some players externally from elsewhere. Those players have fitted in really well and we're really excited about the group this season."