Video: Fulham 1-2 Man United - 18-Year-Old Garnacho’s Last Minute Winner Goal

The 18-year-old will not be heading to the World Cup with Argentina but can reflect on a breakthrough a few days after being made to earn the trust of boss Erik ten Hag.

The Dutchman warned the youngster he must keep the right "attitude" and "approach" after an outstanding half-hour cameo in the 4-2 Carabao Cup win over Aston Villa on Thursday when he provided two assists.

It came after his experience on United's pre-season tour of Thailand and Australia when he was prevented from playing in matches as a disciplinary measure after twice turning up late for team meetings.

Garnacho seems to be taking his manager's advice on board and, after replacing Anthony Martial in the 72nd minute at Craven Cottage, grabbed a dramatic winner in stoppage time with practically the last kick of the match as United beat Fulham 2-1.

The visitors, who had earlier taken the lead through Christian Eriksen's first goal for the club before ex-United man Dan James equalized for Fulham, were fortunate to get the three points.

Not that the delighted teenager, who quickly tore his shirt off (later getting a booking for it) would mind too much about that as he headed towards his side's fans in delight.

"He has a lot of talent and his work rate together with the talent makes a big difference with us from the bench," team-mate Bruno Fernandes told Sky Sports. "It's not the first time he makes a big impact for us.

"We're really happy for him and know he can give us goals, and assists and prove the joy of football.

"Nobody likes to be on the bench so the attitude he has when he comes on has been fantastic. He deserves the chances he's been having and he's got his rewards. That's what football's about."