West Brom 1-2 Manchester City: Leroy Sane to the rescue as winger nets double to dump the Baggies out and book Pep Guardiola's side's place in last-16

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After the gluttony of 15 goals in three games, Manchester City were made to work for this victory that was secured by a thumping late strike from Leroy Sane.

Pep Guardiola's team dominated West Bromwich Albion, yet found Ben Foster in excellent nick and looked like requiring extra time when Claudio Yacob equalised after Sane's opener in the 72nd minute.

West Brom even went close to finding a winner with 14 minutes left when James Morrison forced Claudio Bravo into action.  

Leroy Sane holds his arms out wide after drilling in his second goal to book Manchester City into the fourth round 

The Germany international curled home a delightful effort which turned out to be the winning goal for Manchester City 

The City players celebrate together after Sane's goal fired Pep Guardiola's side into an early lead at the Hawthorns

Claudio Yacob equalised for the home side with a thumping volley after Kieran Gibbs whipped in a corner  

Ilkay Gundogan winces as the City's physios treat him after a late challenge from Yacob which he was booked for

Gundogan holds his hands over his face and looks distressed as he is forced off due to an injury during the second half

But City countered at pace through Bernardo Silva, then Sane, and the German cut inside Craig Dawson to fire in and ensure progression.

Additional time might still have been required had Hal Robson-Kanu finished better. Having already scuffed one excellent chance, the ball fell his way eight yards out gone 90 minutes. But he hurried his shot and struck the post.

Guardiola made eight changes yet deserved to go through and the only blemish concerns Ilkay Gundogan, who was forced off injured in the second half on his first start since rupturing his anterior cruciate ligament last December.

Gundogan had been imperious, gliding straight back into action, and wore a pained expression when walking off flexing his left knee. Guardiola gave a reassuring diagnosis though, saying the injury was 'not serious' and expected the midfielder 'back soon'.

Gundogan was one of the new faces to City's line-up, but can hardly be considered a reserve, and the same goes for Yaya Toure, who was making his 300th appearance for the club. Ahead of those two, Sane, Silva, Raheem Sterling and Gabriel Jesus was some attacking force.

Trying to halt them must be like attempting to plug a pockmarked waterpipe with your hands – the bursts come from everywhere.

Tony Pulis gave it a go by adding a defender to his usual formation and picking two holding midfielders for insurance.

But after just two minutes and 26 seconds the back-five dam ruptured. Sterling found room on the right and his whipped cross reached Gundogan in the centre of the box. Foster produced a fine save but the rebound fell to Sane who finished well. 

Ederson takes his place on the City bench with the injuries he sustained in the clash with Sadio Mane still very visible

West Brom goalkeeper Ben Foster comes off his line to pluck the ball out of the air and calmly collect it

Yacob looks dejected and argues with James Morrison after his side concede the first goal after just three minutes

Gabriel Jesus shows a real level of concentration as he brings down the ball delightfully to start a City counter attack 

Dates and times of the Carabao Cup last-16 fixtures are to be finalised at a later date but will take place on October 23/24

More City chances came thick and fast. Foster palmed away Eliaquim Mangala's header, Jesus spun Gareth McAuley but fired over, and on the stroke of half-time Sterling tested the West Brom goalkeeper again with a delicious curling shot.

Nine minutes after the break came the incident that had Guardiola 'fearing the worst'. The irony being it was a product of Gundogan's brilliance. The German turned majestically away from Yacob on the edge of his own area, then powered 60 yards to reach West Brom's box. 

Yacob committed a foul from behind that left Gundogan punching the turf. Yacob was booked and that the injury was to Gundogan's left knee rather than his previously injured right appears some consolation.

City regrouped and on the hour Sterling drew another save from Foster, this time with his legs. 

West Brom midfielder Grzegorz Krychowiak brings down Gundogan and the referee gives the away side a free kick

Raheem Sterling leads the City attack as he dribbles with the ball and runs directly at the home side's defenders

Jesus fakes to shoot and turns back as he tries to escape West Brom defender McAuley, who is putting him under pressure

Eliaquim Mangala leaps above McAuley to head at goal but Foster answers to it and saves down low to his left

But then West Brom hit back. Morrison sprang clear but he poked his finish wide and the home side found an unexpected leveller with 18 minutes to play. City defended a corner from Kieran Gibbs dreadfully to allow Jonny Evans and Yacob vast space four yards out. West Brom's villain-in-chief prodded in to score.

Robson-Kanu then sliced an excellent chance when set up by Matt Phillips and West Brom continued to push. But City always looked capable of scoring again and Sane duly delivered.

Guardiola said: 'We played the first half at the same level as our last games, we create a lot of chances. But I know how complicated this stadium is against a Tony Pulis team. When you are only 1-0 up and you concede corners, free-kicks and throw-ins, you suffer. But I am so happy.'

Pulis said: 'We were creating opportunities against one of the top teams in Europe. They made changes but to suggest they were weaker is laughable.' 

Fabian Delph and McAuley challenge for the ball in the air as both players look to win the header

Hal Robson-Kanu reacts with disappointment after missing a glorious chance to take the contest to extra-time late on 

Pep Guardiola and his Manchester City players applaud the travelling supporters following their narrow win on Wednesday 

Spanish manager Guardiola greets long-serving midfielder Yaya Toure after City edged through to the last-16 of the cup