There is one scenario I can think of as to how Manchester City could secure a chance to make the playoffs and that is their win against Club Brugge and PSG's win against Stuttgart.
If Manchester City win, they will qualify for the knockout phase play-off and it doesn't matter what happens in PSG vs Stuttgart and other matches.
They have the same points as Stuttgart and follow them right behind.
Same points as Stuttgart? This is wrong.
Stuttgart has 10 points and Manchester City has 8 points.