Manchester United winger Nani says it's crucial they do not let Chelsea back into the title race.
Chelsea need three points at United tomorrow to take control of the Premiership battle.
"It's very important that we stay ahead of our rivals and don't give them any encouragement," Nani told United Review.
"It will be a big result for us if we can win on Saturday. It will give us a great chance to win the league."
He added: "You're up against big teams in the Champions League and every game in the [Premier] League is important, but we all feel ready for the challenge and are determined to win everything we can."