The midfielder told the club's website: "We talk about the title-winning season a lot. Especially after the win on Monday. Now we are back on track and Chelsea have dropped points against Sunderland, it's an obsession.
"For me, it's good to be behind Liverpool, waiting for them to make a mistake. That's what happened two years ago and we need to believe because when we won the league, we won it in the last second of the last game. Anything can happen.
"[Liverpool] have a difficult game against Chelsea and then another tough game against Crystal Palace so you never know."
City travel to Crystal Palace on Sunday.