We have disguised 12 Reds in Father Christmas outfits for a special festive-themed teaser this week.
Past and present United players are featured and some could be described as more obscure than others in order to provide a testing challenge.
Click on the image above to run through the gallery and why not challenge your friends and colleagues to see who can get the most?
Check out the unmasked pictures here.
More trivia questions: Earliest away goals at OT | Goalkeepers meeting the Reds | Oldest scorers in Premier League | Internationals at Old Trafford | Old Trafford penalties | England's seven Reds | Alan Hardaker Trophy winners | Scored against United | United stars at European Championship | Goals for England| The name game | Non-appearance at finals