Manchester City forward Oscar Bobb will be sidelined for "three or four months" after fracturing a bone in his leg, Pep Guardiola has confirmed. 

It was reported on Wednesday that Bobb had suffered a leg injury in training and would undergo medical tests to discover the full extent of the problem.

He started all five of City's pre-season friendlies as well as their Community Shield victory over Manchester United, and was expected to keep his place for Sunday's Premier League opener at Chelsea.

However, Guardiola confirmed during Friday's pre-match press conference that the Norwegian will miss the first few months of the season, with City hopeful he will return before the turn of the year.

"It was in the training session. Unfortunately, he had a big impact and got injured. He is having surgery this afternoon," Guardiola said.

"Hopefully, it will go well and he will be back in three or four months. 

"We are so sad for him, not because of his incredible pre-season, that doesn't matter, but because we are any time there is a long injury. We are looking forward to seeing him again soon."

Bobb made 26 appearances for City totalling 819 minutes in all competitions last season, with seven of those being starts.

He scored two goals and added one assist, netting a memorable stoppage-time winner in a thrilling 3-2 Premier League win at Newcastle United in January. 

After City sold Julian Alvarez to Atletico Madrid for a club-record €95million (£81.5m) earlier this week, Guardiola was asked whether Bobb's injury left them short and needing to dip into the transfer market.

"Maybe or maybe not, we will see. I'm really pleased with the squad I have, we will see," he said. 

"I'm set. We will see what happens in the market. We can continue to January in that way or maybe we will add some players."

Ruben Dias declared Manchester City "love to win finals" after they defeated rivals Manchester United on penalties to win the Community Shield.

The reigning Premier League champions avenged their defeat to United in May's FA Cup final with a 7-6 shoot-out win at Wembley on Saturday.

That came after Bernardo Silva headed in Oscar Bobb's cross in the final minute of normal time to cancel out Alejandro Garnacho's 82nd-minute strike. 

City won the season's curtain-raising fixture for a seventh time - and the first time since 2019 - to give themselves momentum heading into the new Premier League campaign.

And captain Dias, who has won 10 trophies as a City player, including the Community Shield, was proud of the way his team-mates dug in at Wembley.

"We're happy to start the season in the way we have and obviously there's a lot to come," he told ITV Sport. "It's another trophy and we're always happy to collect trophies. 

"We've just had a long season and we still don't have a full squad back but it is very good for us to start this way.

"It's very different circumstances to the FA Cup final but it's a final and we love to win finals. The way we played, conceding a goal but then to make it 1-1, I'm very proud of all of us and very happy with the win."

Like they had towards the end of the 90 minutes, United looked on their way to victory in the penalty shoot-out when Andre Onana denied Silva from City's first attempt.

However, Ederson helped Jadon Sancho's pen onto the post before himself going on to score as City prevailed in sudden-death.

Ederson buried his penalty, giving opposite number Onana no chance, and team-mate Manuel Akanji believes he is City's king of pens.

"Ederson is probably the best penalty taker in our team, Erling [Haaland] as well," he told ITV Sport. "When Ederson takes the penalty, I know it is a goal.

"It wasn't easy today. We played well. United got a bit better before it went to 1-0. Then it was a great cross from Oscar and Bernardo's header."

City face Chelsea a week on Sunday in the opening game of their Premier League title defence, but they will first revel in their latest trophy triumph.

"This is a great feeling - the first time we have the trophy in a number of years," Bobb said. "To do it with a young group is great. We had belief all the way through. We kept going and didn't get too downbeat.

"It's another trophy. It's a great start. This gives us a lot of confidence and no negatives."

Former ballboy Micah Hamilton and fellow youngster Oscar Bobb struck as a much-changed Manchester City ended the Champions League group stage with a 3-2 win at Red Star Belgrade.

Kalvin Phillips also joined the two 20-year-olds on the scoresheet with a late penalty after manager Pep Guardiola rotated his squad for the Group G dead rubber at the Rajko Mitic Stadium.

Manchester-born academy product Hamilton marked his debut with a superb strike in the 19th minute before Norwegian Bobb, filling in for compatriot Erling Haaland up front, added the second after 62 minutes.

Hwang In-beom pulled one back but Phillips gave City breathing space with his first goal for the club after a foul on Hamilton before Aleksandar Katai headed a late home consolation.

The result meant holders City, who had already secured top spot, finished the group phase with a maximum haul of 18 points while winless Red Star ended bottom.

With City facing Crystal Palace before travelling to Saudi Arabia for the Club World Cup next week, Guardiola not only gave chances to Hamilton and Bobb but brought in fringe players such as Stefan Ortega and Phillips.

In all he made nine changes and, initially, intensity was lacking as Red Star carved out the first opportunity with Osman Bukari’s shot being blocked by John Stones.

Yet City still controlled most of the possession and Hamilton took full advantage of their first serious attack.

Jack Grealish picked out Matheus Nunes and the Portuguese prodded on for Hamilton, cutting inside from the right, to take up the attack.

Hamilton raced into the area and beat Red Star captain Aleksandar Dragovic on the outside before lashing a shot into the top corner from a tight angle.

The hosts responded with Kosta Nedeljkovic turning inside the box and curling narrowly over but City threatened again as Bobb had an effort blocked.

Hamilton almost created another goal for Bobb when he fired in a dangerous low ball from the right but the latter could not make contact at the far post. Phillips, making a rare start, then shot wide.

Hamilton went close again early in the second half when he curled a low effort just wide but City needed Ortega to keep them level.

The German first produced a good reaction save to keep out a Cherif Ndiaye volley at close range and then pushed away a firm strike from distance from Guelor Kanga.

Bobb then took centre stage as he doubled City’s lead just after the hour. He picked up possession from Rico Lewis and opted against the return pass, instead wrong-footing the defenders with a weaving run and sliding a low finish inside the far post.

Red Star rallied and, after Jovan Mijatovic hit the post, Hwang beat Ortega with a low strike to reduce the deficit after linking up with Bukari.

Yet Phillips made no mistake from the spot five minutes from time after Hamilton was brought down by Nasser Djiga and that proved decisive as Katai headed a second Red Star goal in stoppage time.