The former Sheffield Wednesday shotstopper, 40, took on a full-time position at the club last summer after previously working at Glanford Park on a part-time basis.
But United have made one cutback on their coaching staff following relegation to League One, with the strengthening and conditioning coach John Noonan leaving the club.
Next season the assistant youth team coach Guy Parkin will take on a wider remit to include the senior team's fitness concerns.