"Following the on-field review, the referee confirmed that the distance that the ball travelled was not short and the impact could therefore not be unexpected," guidance issued by UEFA on Friday morning read.

"The defender's arm was not close to the body, which made the defender's body bigger thus resulting in the ball being stopped from travelling in the direction of the goal. The referee, therefore, awarded a penalty kick."

Marcus Rashford scored the penalty to take United through on away goals.

There was plenty of controversy on the night about the penalty award, with BT Sport pundits Rio Ferdinand, Owen Hargreaves and Michael Owen – all former United players – unanimous in their view that it should not have been given.

However, guidance from UEFA referee's chief Roberto Rosetti appeared to be consistent with Skomina's decision, as he advised officials in January that "if the defender is making the body bigger to block the ball it is not fair".

Football's law-making body the International Football Association Board (IFAB) moved to clarify the interpretation of handball at its annual general meeting last weekend.

Its position is that if the ball strikes a player's arm when it is extended beyond the body's "natural silhouette" then a penalty should be awarded.

It also said that, from next season, goals scored or created with use of the hand – even accidental use – will be disallowed.

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