You sound like Manchester City will not lose to Arsenal, even though their first eleven are all injured. The Arsenal of this season is different from the Arsenal of last season, and they won against Manchester City at the Emirate Stadium this season. Arsenal is consistent and scores a lot of goals against their opponents. Arsenal is capable of beating Manchester City on Sunday.
We'll see what happens this Sunday, because even though several Manchester City players have suffered injuries, I don't think this will dampen their enthusiasm in fighting to win the match at home. Even though everyone knows that Arsenal is currently still quite good and they could win at home to Manchester City. However, it will never be easy for Arsenal because both teams already know that one of them is a candidate to become champion this season.