When you’ve got Zlatan Ibrahimovic, Wayne Rooney and the most expensive player in the world in Paul Pogba, you don’t expect to have to rely on an 18-year-old.
But that’s exactly what happened on Saturday evening against Hull.
Zlatan, Rooney and Pogba were unable to break down a stubborn Hull defence and it appeared the match was heading towards a 0-0 draw.
But Marcus Rashford had other ideas.
Rooney did well to beat his man and produced an excellent low ball into the penalty area. There were plenty of Hull defenders in the crowded box but Rashford was in the right place at the right time to give United the three points.
Everyone associated with United went mental. Well, that’s everyone apart from one man.
That man was Jose Mourinho who didn’t want to celebrate but to tell Chris Smalling to get ready to come on - something that happened immediately.
Check out his hilarious reaction below:
This celebration epitomises everything that Mourinho is about. He desperately wants to win and instead of going mental over the 92nd-minute goal, he wanted to ensure victory by bringing on an extra defender - despite the lack of attacking threat from Hull.
That’s what makes a top manager.
Mourinho's side are now joint-top with Chelsea after continuing their 100% record in the league this season. It may not have been entirely pretty or convincing but Mourinho won't care one bit. After all, he prides himself on collecting three points no matter how it's done.