Awarding the captaincy to Paul Pogba was a demand for responsibility, an order for the captivating midfielder to merge finesse with the discipline of the France jersey rather than laissez-faire approach in United's.
United fans purred at the presence of Pereira, Fred and Paul Pogba playing together in midfield and Andreas reserved some kind words for our World Cup victor, who played over an hour after less than a week of training.
"It's not having just the armband", Pogba said of his view on leadership.
"Having the armband it's not like, 'Oh, I will show that I am a real captain and have to do extra work, '" he said.
It's not known how Mourinho will react to the appointment, should he still be United boss at the time, but the Portuguese may already be expecting the change as he hinted at being no more than a head coach after Friday's Premier League victory over Leicester. "He's one of the players that I have to speak to, to see how physically and mentally he feels".
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"Paul was fantastic, his contribution was incredible", Mourinho said after taking his captain off late in the game.
"The decision belonged to him, because Andreas Pereira comes from Valencia bench as a winger to play number six; Fred had 10 days training, Ukrainian league, comes direct to Old Trafford; Ander Herrera injured".
"Pogba was a monster, we thought maximum 60 minutes but he managed the 80".
"They're all here, they help me, my team-mates, obviously it makes me want to give them love and give them good performances on the pitch".
A tense relationship with Jose Mourinho appears to be at the heart of it. Questions about their relationship were raised last term and the midfielder is said to have been annoyed by his manager's comments around the World Cup. "But very complete performance, he just has to keep going, the mentality was very good, the tactical discipline was very good too and he had the power to move forward and score an important goal for us". Lukaku then passed up a golden chance when Schmeichel spread himself well to turn the Belgian's effort over the bar.