Manchester City advanced to the Champions League quarter-finals with a 5-0 aggregate victory over Sporting Lisbon after a goalless draw in the second leg at the Etihad Stadium
Pep Guardiola's side had as good as confirmed their place in the last eight with their five-star showing in last month's first leg, allowing them to conserve their energy back at the Etihad
City did create chances, with Raheem Sterling spurning a one-on-one opportunity in the first half and Gabriel Jesus seeing a goal ruled out for offside by VAR soon after the break, but Sporting defended resolutely, returning to Portugal with their pride restored
Pep Guardiola used the opportunity to rotate his side, making six changes from City's 4-1 win over Manchester United, with teenager CJ Egan-Riley handed a Champions League debut at right-back
James McAtee, another academy graduate, impressed after coming off the bench at half-time, while there was also a second-half cameo for back-up goalkeeper Scott Carson, who denied Sporting's Paulinho a winning goal with a fine one-on-one save after replacing Ederson for only his second Manchester City appearance
City smashed four goals past Sporting in the first half of last month's first leg but there was understandably less urgency in their play this time around while Sporting also offered stiffer resistance
Jesus had an early penalty appeal turned down when he was shoved in the back by a Sporting defender following a set-piece, but the visitors proved difficult to break down
Sterling went close when he narrowly missed a low Jesus cross at the far post, and he then spurned their only clear opportunity of the first half when Sporting goalkeeper Antonio Adan stood tall to save his attempted chip after he latched on to Phil Foden's flick
The half-time introductions of McAtee and Riyad Mahrez for Foden and Bernardo Silva injected some speed into City's attack, with Mahrez teeing up Jesus for his disallowed strike less than two minutes into the second period
It was Sporting, though, who looked most threatening as the second half wore on, with defender Matheus Reis blasting an inviting chance over and Paulinho denied by Carson after being sent through by substitute Marcus Edwards
City created chances to win it in the closing stages, with John Stones sending a header narrowly over and Sterling blasting a diagonal shot into the side netting, but there was never any doubt that Guardiola's men would be advancing to the last eight, with Luke Mbete, another youngster, also given a late cameo
This goalless draw will not live long in the memories of most of those who watched it but it was certainly special for academy graduates CJ Egan-Riley, James McAtee and Luke Mbete
Egan-Riley's only previous senior appearance for City had come in the Carabao Cup against Wycombe Wanderers in September but here he was starting a Champions League knockout tie
The 19-year-old acquitted himself well at right-back, completing 58 of his 60 attempted passes - giving him a 97 per cent success rate - while also defending assuredly when required
"CJ played really well," said Guardiola afterwards
 "He didn't miss one ball
 He's a guy who is a seven - there's nothing exceptional in anything, but that is a good sign as a defender
 He doesn't make mistakes
"McAtee, also 19, was the pick of the young trio following his half-time introduction, however, immediately looking comfortable in City's attack and combining intelligently with Gabriel Jesus in particular
City have high hopes for McAtee, who has already made two Premier League appearances this season, and a lively showing on his Champions League bow offers further encouragement
Defender Mbete did not have as much time to impress, replacing Aymeric Laporte with only six minutes of normal time remaining, but his introduction capped a satisfying night for the club's academy
Egan-Riley, McAtee and Mbete may not be involved when the quarter-finals come around but Manchester City will hope they have important roles to play in the club's future
"The first half was better than the second
 After the goal was disallowed, we were not active and we didn't make movements
 It's not easy because after this result [in the first leg], in the second half, it was already over
"It was a little bit not good, but I understand in these types of games in this situation, it's difficult to handle it… The second half was a little bit sloppy but it's not easy after 5-0
"But I'm very pleased because over both games, we deserve to be in the quarter-finals
"It's a good sign
 Before, the people didn't care what we were and in the last decade, step by step the club grew and we are there, every season in the Champions League, playing in this competition and qualifying for the last 16 and now we are in the quarter-finals
"I'm a guy who has learned to enjoy the moments, and when we qualify for the next season to play in the Champions League, then I celebrate it because I know how difficult it is
 When you are in the group stage and you qualify for the last-16, I celebrate because I know how difficult it is
"When you go through, every opening is difficult
 Now is time to congratulate everyone and focus on the Premier League and next week we will see the draw
 "He deserved it
 He's so important for us in the locker room
 He helped Ederson and Zack [Steffen] be calm and it was good for him
"The Champions League quarter-final draw will take place on Friday, March 18 at 11am UK time, with the balls being drawn out at UEFA's headquarters in Nyon, Switzerland
 The semi-finals will be drawn at the same time, meaning clubs and fans can plot out their potential route to the Paris final
You will be able to follow the draw across digitalplatforms
Manchester City return to Premier League action when they travel to Crystal Palace on , live on  from 7pm; kick-off 8pm
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