Di Maria, who was regularly told off by Tuchel for profligacy in the first half, looked like the player United hoped he would have been in the second half as he had a hand in both of PSG's goals. This considered, United's frustration that the referee then chose to send Paul Pogba off (he'll now miss the return in Paris) for a second bookable offence in the closing stages was obvious.
United were in the midst of an 11-game unbeaten streak since December but the Red Devils crashed to their first defeat under caretaker manager Ole Gunnar Solskjaer.
"You can see that we've not played games at this level for a while and we'll have to learn from this experience, because it was one of those experiences that can go either way".
The French heavyweights were shorn of Edinson Cavani and Neymar for the first leg of this Champions League last 16 tie but still proved too strong for United as Presnel Kimpembe and Kylian Mbappe secured a 2-0 win at Old Trafford. "Maybe he was a bit nervous and a bit overused because he plays all the time for us".
Realistically, they were never going to win the Champions League anyway but what they can achieve is finish in the top four of the Premier League, and continue their progress in the FA Cup.
"I can't do anything about Alexis Sanchez", said the Norwegian.
PSG showed they still retain plenty of world class talent despite their big name absentees as United struggled to contain the slick passing of Thomas Tuchel's men in midfield and the pace of Mbappe in attack. "He needs to find himself when he plays because we know there is a quality player there", he said.
There was an irony that Angel di Maria was one of PSG's most effective players.
Pogba has been the best player in the Premier League since Solskjaer took charge, and he has played a key role in setting up so many of United's goals as well as scoring some himself.
United are still yet to win a Champions League knockout game since 2014.
Manchester United's 2-0 slump to PSG at Old Trafford was the first time the team had ever lost by a margin of more than 1 goal at home in European competition according to Opta.