United opened the scoring after 17 minutes, with Anthony Martial coming good on his early promise, after two strong chances beforehand.
A wonderful cross from Diogo Dalot was chested down and fired home by the Frenchman, thus keeping up his record of scoring in all three of the Reds' pre-season outings.
Harry Maguire did well to prevent Jesurun Rak-Sayki from equalising soon after, with United looking comfortable while defending any early advances from the Eagles.
Marcus Rashford's wicked cross failed to pick out a white shirt soon after, before the first half’s action drew to a close at 'The G'.