(Watch) Marcus Rashford slips on his backside after rounding keeper

Manchester United are through to the fourth round of the FA Cup after beating Reading in a 2-0 win.

But there was a moment near the end that we could all have a giggle at knowing the result was already in the bag.

Marcus Rashford, who came on as a substitute for an injured Alexis Sanchez, was clear on goal before deciding to found the Reading goalkeeper.

The young United striker then ended up landing on his arse and allowing the ball run out of play.

On the ground, Rashford saw the funny side… but it would hardly be *that* funny if the Reds were needing a goal.

Watch the clip below.

It was a good win for the lads. Bring on the fourth round.

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