Pep Guardiola says his job at Manchester City is not assured despite his recent contract extension after their recent slump in form.

The Citizens have won just one of their last 10 matches in all competitions (D2 L7), suffering as many defeats in that run as they did in their previous 105 matches combined. 

They currently sit nine points behind leaders Liverpool in the Premier League, while they have also given themselves a mountain to climb in the Champions League following a 2-0 loss to Juventus on Wednesday.

Guardiola has been open about the team's defensive struggles in recent weeks, with the likes of John Stones, Nathan Ake, Manuel Akanji and Rodri missing significant game time already this campaign.

Since the start of November, City have conceded more goals across all competitions than any other team from Europe's top five leagues (21 in nine games).

Guardiola signed his two-year contract extension during the November international break, following a three-game losing streak in all competitions, and insisted he had no regrets over doing so.

"Absolutely not," Guardiola said in his press conference on Friday. "I will regret if I left now. I would sleep even worse than now. It's impossible I would leave the situation as it is now."

However, the Spaniard admitted that his position is still not secure if City cannot turn their fortunes around.

"[The owners] know when the situation is bad, and we start to lose games, then it is not sustainable. Then I would not be here next month or in the next two months," he told Sky Sports.

"The results dictate that - and this is the reality. We cannot eternally lose games. Maybe because what we have done in the past [people will think I wouldn't be sacked], but we are judged daily as managers.

"In one bad season, you can be out. The club knows that I will not do it [resign]. The club would have to do it. I want to be close to the players. I want to be beside them. We've lost a lot of games - more than we have in two seasons.

"In the next game, it will be the same and in the last month, it has been like that. You can survive for a few games, but we've been doing it for over a month with players with a lot of minutes in their legs.

"It's not because they don't want it - it is because of the calendar, the schedule. We will go to play in the Club World Cup in Orlando next summer, and then we have to start the Premier League three weeks later. It's impossible."

City face Manchester United on Sunday, with Ruben Amorim, who beat City 4-1 with Sporting CP in the Champions League, looking to become just the second manager to beat the reigning Premier League champions with two different sides in a single campaign.