Moyes cancelled the traditional Manchester United Christmas pantomime.
The Red Devils are struggling in the Premier League - currently lying in eighth place - although they beat Aston Villa 3-0 on Sunday.
A source told The Sun: "This year's Christmas lunch contrasted heavily to those under Sir Alex Ferguson, which were filled with fun.
"This time it was far more serious thanks to the new managers' speech. The youth team stars were gutted not to put on a show."
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