Mourinho’s men, despite being largely overwhelmed by Claude Puel’s front four, raced into an imposing lead through goals from Zlatan Ibrahimovic, only to be pegged back by two Marco Gabbiadini goals either side half-time.
But the 35-year-old, in the face of a late Southampton onslaught, duly stepped up and headed home a dramatic winner after 87 minutes, handing Mourinho his first trophy at Old Trafford.
And the 54-year-old, speaking after the game, was quick to point out the Swede’s match-winning display.
“He won the game for us, he was outstanding,” he said.
“Pogba was at a similar level but Zlatan was outstanding in a match were our opponent was better than us for large periods of the game.
“They deserved to go to extra-time, they didn’t deserve to lose, but Zlatan made the difference and won us the cup.”
When it was confirmed that Ibrahimovic would sign for United back in July, I felt as if Zlatan’s time at United would go one of two ways.
The first being a gloomy, slightly embarrassing sight of the Swede, whilst prolific in France, adjusting to life in England with about as much success as Radamel Falcao, managing just four goals before retiring in obscurity; the second, on the other hand, being tantamount with the imperial domination of an ancient viking war king, arriving at yet another patch of land that he would duly make his own.
His performance at Wembley was perhaps the biggest piece of evidence yet suggesting that the latter prediction is starting to come true.