The Reds, who need one more goal to make it 100 for the season, travel to the Britannia Stadium knowing a win will extend their lead to 15 points over City, who are on FA Cup semi-final duty against Chelsea at Wembley on the same day.
United may be within 10 points of claiming a 20th league triumph, but Chicharito insists no-one at Old Trafford is thinking of anything but three points on Sunday.
"We have to forget about that [when United could win the title]. We are only thinking about Stoke," he adds. "We are taking it game by game. It's Stoke now and then we'll think about West Ham [on Wednesday] and then the next game.
"We are working very hard in training and doing what the gaffer wants us to so we can put in a performance on the pitch."
"We are working very hard to try and create as many chances as we can and when we have those chances we always try to score. The most important thing for us is to win the games - even if we win 1-0 we would still love that."