Manchester United duo Marouane Fellaini and Anthony Martial got into the Christmas spirit this week when they gave a young fan the surprise of a lifetime.

The Manchester United Foundation invited Keeley, a player for the club's Centre of Excellence, to the training ground under the guise of interviewing her for a documentary but in reality giving her a reward for her hard work for the club.

Little did she know, however, that United's plans involved Fellaini and Martial.

After arriving and beginning her interview with a member of staff, Keeley was left star-struck and, as she described, "shocked and a nervous wreck" when the two United stars walked in and surprised her.

After she was left speechless for a few moments, Fellaini added to Keeley's surprise when he invited her to watch a first-team training session - which resulted in the teenager complimenting the Belgian about his hair in return.

Needless to say, the gesture left Keeley and everyone present with a huge smile on their faces.

Watch Fellaini, Martial and United make young Keeley's day with their heartwarming gesture in the video below.