It is Amorim’s job to piece through the ridiculous events that unfolded at Old Trafford.
He will know that, for 70 minutes, United produced arguably their best performance under him as Manuel Ugarte and Diogo Dalot put them within touching distance of a place in the last four.
But they were made to pay for the failure to take one of numerous chances to score a tie-sealing third and then simply tossed away their advantage.
The start of their unravelling was a straightforward free-kick into the box. Former Arsenal striker Alexandre Lacazette got a flick on and Corentin Tolisso nipped ahead of Leny Yoro to head home.
The goal seemed to suck all the certainty and purpose out of the home side. Substitute Malick Fofana began to threaten and Thiago Almada skied an excellent chance over from the edge of the area,
But United were rocking and they were unable to stabilise themselves before the French visitors levelled.
This time there was an English element as Ainsley Maitland-Niles let fly with cross-shot that fizzed to Nicolas Tagliafico at the far post. Unmarked, the Argentina defender scuffed his effort but Andre Onana, scrambling desperately across his goal, could not prevent the ball crossing the line.
It was a seven-minute spell that summed up everything that is bad about Amorim’s team.
-From that point on, with substitute Mainoo operating as a false nine and Mason Mount in support, the home side were simply no threat, not even after Tolisso had been unluckily dismissed for accidently tripping Yoro.
Even a man down, there was greater purpose about Lyon and it was no real surprise when man of the match Rayan Cherki put the visitors ahead from the edge of the area in the first period of extra time.
The jubilation that followed that goal was nothing compared to the celebrations after Lacazette sent Onana the wrong way from the spot after Yoro and Luke Shaw had combined to upend Fofana inside the penalty area.
United appeared to be heading out. There was going to be no European football next season for only the second time since English clubs returned to Europe in 1990 following the Heysel tragedy. The financial cost of missing out on the Champions League is immense.
But Amorim and his players were not done. In the end, the glory was all theirs.
Meanwhile, Manchester United defenders Noussair Mazraoui and Victor Lindelof had to leave Old Trafford to attend urgent family issues.
Mazraoui did not appear for the second half after starting the game while Lindelof appeared to be getting ready to come on but in the end, the change never materialised.
Both issues were independent of each other and United sources said both players were fine.
: Harry Maguire scores sensational late winner){kind=link}