Manchester United were outclassed by Lionel Messi and his Barcelona teammates at the Camp Nou on Tuesday night.Ole Gunnar Solskjaer’s men were acutely aware that the odds were stacked against them after losing the first leg 1-0 at Old Trafford a week earlier - but they also knew that a Paris-Saint Germain style miracle wasn’t out of the question.They started well and should have scored inside the opening minute through Marcus Rashford. However, it was all downhill for the Red Devils after their impressive 10-minute spell at the start of the match.Messi scored two goals in four minutes to effectively kill the tie off.His first was a moment of magic: nutmegging Fred before bending an unstoppable left-footed shot past David de Gea from 20 yards.

His second, on the other hand, wouldn’t have happened without De Gea’s calamitous error.

Philippe Coutinho then banged in a third Barça goal on the hour-mark with a long-range screamer, which De Gea could do little about.

Intriguing footage has now emerged which shows that Solskjaer attempted to mix things up in the second half by changing his formation.

The United boss handed Rashford a hand-written tactical note, presumably to pass on the information to his teammates.

However, the 21-year-old striker dropped it outside the Barcelona penalty area which, it turned out, wasn’t a particularly smart place to discard it.

Barça goalkeeper Marc-Andre ter Stegen couldn’t resist the temptation of reading the note - and who can blame him?

Watch it here...

But what did the note have on it?

Well, it shows that Solskjaer wanted his players in a 4-4-2 formation, rather than the 4-3-1-2 his side initially started the game with.

Although the video quality isn’t great, it’s understood that the note reads: Vic (Victor Lindelof), Chris (Chris Smalling), Jones (Phil Jones), Ash (Ashley Young); Jesse (Jesse Lingard), Scott (Scott McTominay), Fred, Paul (Paul Pogba); Rash (Marcus Rashford), Anthony (Anthony Martial).

You have to be more careful in future, Marcus!

Unfortunately for Solskjaer, his late tactical switch failed to have any sort of impact, as Barça booked their place in the Champions League semi-finals with a comfortable victory.