5:39 PM
Some of the players on show can expect a call back from the German, but others will fear being left behind the scenes.
With their place at the top of Group F already secured, Rangnick made 11 changes to the game. After a draw with the Swiss champions, Juan Mata, Dean Henderson, and Mason Greenwood let Rangnick know that they were willing to work with him in his Old United revolution.
How every team finished in the group stage.
The round-of-16 draw has seedings, date and details.
Wan-Bissaka has reason to worry that the curtain may come down on his days as a regular in the team.
"It was an experiment," said Rangnick. We have picked up a few more knocks, so I wanted to save some players.
The GP.
W.
D.
L.
The person is calledGD.
There is a point called the PTS.
Man Utd.
6
3
2
1
+4
11
2 - Villarreal.
5
2
1
2
+4
7
Atalanta.
5
1
3
1
0
6
The boys are 4.
6
1
1
4
-5
5
I knew before the game that this team hadn't played together. There were a few unforced errors in the first half hour. We didn't score and were sloppy, but we should have been up by more.
We did not defend high enough after we lost the game.
Juan Mata and Mason Greenwood raised their stock.
His programme notes before the game seemed to be aimed at his squad as much as the supporters, with the 63-year-old reminding his new charges that no one's selection will be guaranteed during his time on the touchline.
He wrote that he kept the same team for Crystal Palace which had beatenArsenal, but that it didn't mean anything.
With so many games at this time of year, there will be chances for everyone to stake a claim. I want to see that every single player is trying to maximize their chances.
The first to take his chance was Greenwood, who scored from a cross by Shaw. The 20-year-old, starting for the first time in more than a month after a bout of the coronaviruses, managed to hook a ball which appeared destined to skid away behind him into the corner of the net. It was a finish so good it left Young Boys goalkeeper Guillaume Faivre unsure as to what had happened and Rangnick pumping his fists in celebration.
At the other end Henderson was in a good starting position to dart out of his area and sweep up behind United's new high defensive line. Making his second start of the season, he made a good save from Rieder before being replaced by Tom Heaton, who was making his debut.
Mata was next to van de Beek in the middle of the field. The Spaniard used the extra space to show off his technical ability. It took just three minutes for him to get the ball in the centre circle and pass it to Amad Diallo.
Wan-Bissaka had a far more chaotic evening than Mata did, as Rangnick says he wants his players to "control" games. He was giving the ball away in dangerous areas if he wasn't wasting good crossing opportunities down the right. He won't want to see a replay of Young Boys' goal, as the right-back seemed to switch off when Van de Beek rolled a pass in his direction, allowing Rieder to nip in and score.
Wan-Bissaka was stretchered off with a late injury.
There is only one starter for the trip to Norfolk on Saturday after Diogo Dalot's performances against Crystal Palace. Wan-Bissaka ended the night on a stretcher after colliding with the advertising boards during the last attack of the game.
The son of a former Wales international and the first British player of South Asian descent were both handed their first-team debuts by the club.
That was a glimpse into United's future, but the aims of the man are more short-term. He will have a chance to put pressure on the teams in the new year when he faces Paris Saint-Germain in the last 16 of the European competition, as well as a run of games in the English top flight.
After a closer look at his squad against Young Boys, he can prepare for those games with a clearer idea of the players who can help him make the most of his own opportunity to impress.