Image source, Getty ImagesKobbie Mainoo became the first player to score and assist a goal on his first major European start for Manchester United since Wayne Rooney in September 2004 against Fenerbahce.
Want more analysis of wins for Manchester United and Tottenham in the Europa League?
Steve Crossman, former United coach Rene Meulensteen and ex-Spurs goalkeeper Paul Robinson discuss Thursday's games in the latest episode of BBC Radio 5 Live's Football Daily podcast.
Tottenham have agreed a £50m deal with Bayern Munich for 19-year-old forward Mathys Tel. (L'Equipe - in French), external
However, Manchester United are aiming to sell 20-year-old winger Alejandro Garnacho and bring in Tel on loan. (Independent), external
Tel would prefer a move to Old Trafford over Arsenal, Chelsea and Tottenham, so he is waiting to see if Manchester United's interest is concrete before making a decision. (i Sport), external
Want more transfer stories? Read Friday's full gossip column
Image source, Getty ImagesManchester United's Kobbie Mainoo speaking to TNT Sports: "It was a tough game as we expected and the atmosphere was really good.
"It's important to keep on winning more and more as we want to go as far as possible."
On playing in a more advanced role: "I enjoyed it. I am just happy to be on the pitch for Manchester United."
On his goal: "I am more annoyed that I missed the one in the first half, but I managed to get the one in the second half."
On gaining automatic qualification to the knockouts: "There is a lot of games, so anywhere we can get a rest is important."
Mainoo became the 58th teenager to start a major European match for Manchester United, which is the most of any English club in history.
Image source, Getty ImagesManchester United boss Ruben Amorim on progressing directly to the last 16: "That is really important, for us to have time to train and have the connection between everybody - even the staff.
"In training we go to the pitch and get to know each other in the right environment.
"It is really important and then you can have one week to prepare again. At the beginning of the week you can work your ideas and then you have time to focus on the opponent.
"I can understand my players better then. We need time to understand the players as Kobbie Mainoo was struggling a lot defending as a midfielder. As a 10 he was so free playing the ball near the box.
"We need time to work with the players to understand what the best position is for them."
Joe Rindl
BBC Sport journalist
Image source, Getty ImagesManchester United's win over FCSB was full of tactical tweaks which might indicate manager Ruben Amorim's long-term thinking.
Amorim opted to start Kobbie Mainoo in a more advanced position and the midfielder rewarded the Portuguese's call with his first goal of the season, having not hit the net since United's win in last season's FA Cup final.
Behind him Bruno Fernandes played as a number eight, collecting the ball in deeper pockets and feeding those ahead of him.
The Red Devils looked much stronger once half-time substitutes Alejandro Garnacho and Amad Diallo were in the wide positions with the pair replacing left wing-back Tyrell Malacia and defensive midfielder Toby Collyer at the break.
Both United's goals came from low crosses into the box.
Ultimately United always looked in control and, in a competition where the winner gets a Champions League spot, are the only side still unbeaten.
They will play one of Real Sociedad, Galatasaray, AZ Alkmaar or FC Midtjylland in a last-16 tie in March.
Will Mainoo be playing as a number 10 on that day?
Image source, Getty ImagesFormer Manchester United coach Rene Meulensteen praised Ruben Amorim for his "clever substitutions" as United claimed three consecutive wins in all competitions for the first time this season.
United's win over FCSB sealed their direct route to the last 16 and maintained their unbeaten record in the Europa League this season.
"Manchester United took control of the game really well in the first half and they dominated possession," said Meulensteen on BBC Radio 5 Live. "FCSB surprised me with the way they set up.
"They were passive and never laid a glove. Amorim made some clever substitutions.
"In the second half there was more urgency and more penetration. They scored two really good goals and he will be pleased with this result."
Ex-England goalkeeper Paul Robinson added: "It was a very professional performance from Manchester United away in Europe.
"On paper it looked tricky, but they have got the result they thoroughly deserve."
Image source, Getty ImagesRuben Amorim became just the second Manchester United manager to win his first four major European matches in charge, after Sir Alex Ferguson in 1990.
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The final matches of the Europa League group phase take place tonight.
FCSB v Man Utd
Tottenham v Elfsborg
All kick-off times 20:00 GMT
Manchester City fan Steven McInerney is delighted to have progressed to the Champions League play-offs but is concerned about who lies in wait for Pep Guardiola's side.
He told BBC Sport that City are still capable of brilliance - but that will be tested to the limit by either Bayern Munich or Real Madrid.
Find more from Steven at Esteemed Kompany, external
Image source, Getty ImagesManuel Akanji is confident Manchester City "can beat every team in Europe" after progressing to the Champions League play-off spots.
City will find out on Friday whether their next opponent will be either Bayern Munich or Real Madrid.
"I'm happy that we made it to the play-offs," Akanji said. "Obviously, we wish we would have made it to the top eight but we couldn't change it anymore. All we had to do was win.
"Obviously Real Madrid and Bayern Munich aren't the teams you want to face but, whoever it is, we are looking forward to the challenge and I think we can beat every team in Europe.
"Whoever comes, we are ready for the challenge. Even though we didn't play as good as we used to do, I think no team wants to face us.
"We have Arsenal next and have to recover really well now. It's an important game, away - it won't be easy. We have to be ready for the challenge."
Image source, Getty ImagesFormer Manchester City defender Nedum Onuoha says he would like to see Vincent Kompany "go toe to toe" with Pep Guardiola in the Champions League play-offs.
Speaking on BBC Radio Manchester, Onuoha was asked whether Manchester City would prefer to face Bayern Munich or Real Madrid in the next stage of the competition.
"I think, purely narrative and storyline-based, I would like to see them face Bayern Munich," Onuoha said. "As we all know, a certain somebody that manages Bayern Munich has a statue outside Manchester City's stadium.
"It would be nice to see Vincent Kompany come back, with the challenge of trying to beat his former team in the Champions League.
"It is Kompany's first time coaching in the Champions League and it is his first time coaching at a really high level, so I would like to see him come back and try to go toe to toe with Pep Guardiola.
"I think Bayern Munich are a really good side but they do have some weaknesses as well. I think those two games could be exceptional, so I would like to see that.
"But just being in the draw is the biggest thing - because the run from here is never going to be easy."
The Champions League knockout phase play-off draw takes place on Friday 31 January at 11:00 GMT - come back to this page for the outcome and reaction
Regardless of whether Manchester City draw Real Madrid or Bayern Munich in the two-legged Champions League play-off, Pep Guardiola can reflect on recent success over both European giants.
Image source, Getty ImagesAlthough Real Madrid knocked City out in the semi-finals last season on penalties, the Blues have only lost one of their past eight games against the Spanish champions.
Image source, Getty ImagesCity are unbeaten in their past three games against Bayern - most recently beating them in the 2022-23 quarter-finals 4-1 on aggregate, and have only lost one of their past five games against the German side.
Image source, Getty ImagesFormer Manchester City striker Paul Dickov says City can send a statement that they are "getting back to their best" if they win their two-legged play-off to reach the last 16 of the Champions League.
After surviving a scare against Club Brugge on Wednesday, City now face a play-off against either Bayern Munich or Real Madrid.
"Pep Guardiola said in his press conference that they will be in a stronger position in a couple of weeks but they are going to have to go out there and beat one of the best teams to get to the knockout stages - it's as simple as that," he told BBC Radio 5 Live.
"City have had some wonderful games against Real Madrid over the last three or four seasons, great games to watch - and if it's Bayern Munich, it's the return of Vincent Kompany.
"If City can win it, it is going to send a statement to the rest of Europe that they are getting back to their best."
Image source, Getty ImagesWith Ruben Amorim having had more games and training sessions, you can see what they are trying to do in defence, but in attack, it has not been smooth.
The manager probably knows why, but with his setup, some are wondering whether he has the right players in the right positions. To a certain extent they do, but the players are learning how to do it because it is different for quite a few of them.
One thing I am always big on is balance. The value of a left-footed centre-half, for example, means one side of the field is not completely closed up as opposed to when a right-sided player is in there.
Diogo Dalot has done a good job but his tendency, like every right-footed player is come back inside. You find balance where there is a right-footer on the right and a left-footer on the left and the pitch becomes bigger.
Even though it seems like a really simple thing, it can make a huge difference to the way the team attacks.
With wing-back Patrick Dorgu possibly joining, these margins make a difference. If he settles, then defensively they can continue being relatively strong, but it would provide a different option in attack. If he is good on the ball, then it allows for more progressive passes, more ways to break the lines and to get at the opposition.
It is not just about who United bring in that is important, but who might leave too.
If everybody is available, they have one of the biggest squads, but not everybody has the same sort of impact. You do not want players in the squad in the second half of the season who are unhappy because that can very quickly upset the way things are within the dressing room.
Amorim will know the value of having good vibes in the squad and people who pull in the same direction.
Nedum Onuoha was speaking to BBC Sport's Nicola Pearson
