City face away matches against their local rivals and Arsenal next week, but play the Cottagers first tomorrow afternoon.
The Spanish winger told the club's website: "We are not thinking about the Manchester derby, we are only focused on the Fulham game.
"This would be three very important points for us and when the game finishes then we will think about United.
"It is more difficult to play against teams that are fighting to avoid relegation because they defend very well and that playing style is the most difficult for us when they come and try to defend."
When City played Fulham earlier in the season they clinched a 4-2 win.