Those inside Old Trafford three years ago on the night of the FA Youth Cup final all speak of being left in awe at the performance of Alejandro Garnacho.
Skinnier then, only a boy, he won a penalty which he coolly slotted home and ran off to the corner to mimic Cristiano Ronaldo's 'siu' celebration. Later, he scampered free down the left, turned inside and out before taking five Nottingham Forest players out of the game to score and secure Youth Cup glory for United, their first title in 11 years.
It was a performance that underlined to fans and coaches alike that here was a player with superstar potential.