The Burnley midfielder hit a screamer at the Stretford End in the 2-2 draw.
Mulder wrote for HLN: "Boxing Day. The ball is at a distance of about 25 meters ready for a free kick. Gudmundsson and Defour have reported to take it. Defour is very close to the ball. I assume that he goes over it and leaves the responsibility to Gudmundsson.
"In the next tenth of a second, keeper De Gea was seen. Defour has shot. A world class goal. An Augenweide says the Germans. A beauty, a Christmas cracker, a jewel of a goal in the top corner. I try to find a fitting word for this magical moment at Old Trafford, Theatre of Dreams. Flying velvet.
"Steven Defour, meanwhile, does not change. He walks to the side and puts a bottle to his mouth..."