Pep Guardiola was left to rue injuries to Jack Grealish and Bernardo Silva after Manchester City returned to Champions League action with a 3-1 win at FC Copenhagen on Tuesday.

Grealish, handed his first start in six matches, lasted just 21 minutes of the holders’ largely straightforward last-16 first-leg success at Parken Stadium before being forced off with a groin injury.

Silva, who put City into a 2-1 lead just before the break with a fine flicked finish, took a knock to the ankle late in the game.

The double blow comes after Josko Gvardiol missed the game with an ankle injury and Mateo Kovacic was also unavailable.

City manager Guardiola said: “It’s something muscular with Jack, his groin.

“He felt it on the grass, started to complain. The players can feel it immediately if it’s muscular. It’s a pity, he’s gutted.

“He wanted to continue but we didn’t want to make the damage even worse. We’ll make tests tomorrow.

“Bernardo has a big knock in his ankle and Josko is out two to three weeks. Kova is ready to come back.”

The injuries took the gloss off what was a mainly comfortable night for City.

They took an early lead through Kevin De Bruyne and, dominant in all departments, should have led by more before Magnus Mattsson levelled after an Ederson error.

Silva restored the lead and Phil Foden gave the scoreline a more realistic look in stoppage time.

Guardiola said: “It was really, really good. I’m so proud we played at that tempo. It was perfect.

“We were patient in the right moments but it’s not done. I know how difficult it is.

“It’s not decisive but a good result. Hopefully we can finish at home in front of our own people and go to the next round.”

Danish champions Copenhagen had not played competitively for two months due to their league’s winter break and their rustiness was evident.

Coach Jacob Neestrup admitted it will now take something spectacular to progress but will not give up.

He said: “Of course it’s going to be difficult, but now we have three games in the Danish league where we need to get results. Then we take the away game, where we try to do our very, very best.

“The players did everything they could. I can’t blame them for anything. We played against a top, top team who know exactly what to do in every situation.

“I think City came with a very, very professional mindset. They took control of the game from the first second.”

Manchester City resumed their Champions League defence with a comfortable 3-1 win at FC Copenhagen on Tuesday.

Kevin De Bruyne and Bernardo Silva netted either side of an unexpected Magnus Mattson equaliser as City dominated a last-16 first leg they could have won far more convincingly.

Pep Guardiola’s side dominated in every aspect at the Danish capital’s famously atmospheric Parken Stadium and Phil Foden completed a deserved success late on.

With close to 80 per cent possession, the holders were hardly troubled and will be confident of wrapping up a place in the quarter-finals when the sides meet again in Manchester in three weeks.

The only real downside for City was the loss of Jack Grealish through injury in the first half.

Despite having almost complete control, one thing City could not do was silence the home fans.

As anticipated, Copenhagen’s raucous following produced an intimidating atmosphere and greeted every City attack with loud whistles and even a siren.

Yet it appeared to have no effect on City, who immediately imposed themselves and should have taken the lead when De Bruyne fluffed a header from a Nathan Ake cross.

Ruben Dias also forced a save from Kamil Grabara and Ake fired the rebound over, although a raised flag suggested neither might have counted.

Copenhagen, their rustiness amid Denmark’s long winter break evident, were struggling to live with City and it came as no surprise when De Bruyne hit his 11th-minute opener.

The Belgian, who has quickly eased back into gear after a long injury lay-off, timed his run onto a Foden pass superbly and finished clinically with a low shot.

City looked hungry for more and Erling Haaland was inches away from meeting a De Bruyne cross before a Silva ball was deflected onto the woodwork by Denis Vavro.

City suffered a blow when Grealish, making his first start in six games, was forced off after 21 minutes soon after a challenge from Diogo Goncalves but his replacement Jeremy Doku added more energy to City’s attack.

Within moments of coming on Doku set up Haaland for what would have been a spectacular goal with a volleyed cross but the Norwegian’s overhead kick flew over.

City looked capable of running up a huge score but remarkably found themselves level when Ederson gifted the hosts an equaliser on 34 minutes.

The goalkeeper passed straight to Mohamed Elyounoussi and, although the former Southampton forward’s shot was blocked, debutant Mattson followed up with a fine finish.

Mattson, a recent signing from NEC Nijmegen, almost added another soon after but blazed over.

The home fans were animated but their excitement was not to last.

Silva restored normal order before the break with a fine flicked finish after De Bruyne got the better of Mattson to pick out the Portuguese.

De Bruyne almost added to the lead early in the second half when he tested Grabara before Haaland headed tamely at the keeper and Foden had an effort deflected wide.

Grabara also pushed away a long-range Doku strike and Haaland was twice denied by the keeper in stoppage time before Foden wrapped up the win after exchanging passes with De Bruyne.