The Citizens, who won the treble last term, take on Premier League leaders Liverpool.
While they are only a point behind the Reds, Foden knows that getting a win over their rivals would make them title favorites.
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"It's massive," he told Premier League Productions of Sunday's top-of-the-table meeting after beating Manchester United at home.
"It's a stadium we never seem to win a lot at, so it's going to be a challenge.
It's the game you want to play in as players, the biggest occasions. Hopefully, we will be ready for it."