Manchester United boss Louis van Gaal was delighted after his side battled past Club Brugge on Tuesday night in their first leg of the Champions League play-off.
Marouane Fellaini's late goals gave his side a two-goal cushion going into next Wednesday's return leg.
And the Dutchman says the Belgian's third goal makes a huge difference ahead of next week's game.
"It makes a difference because 2-1 is a very difficult result," van Gaal told BT Sport.
"We deserved much more because we created a lot of chances. It is what I am always saying, you have to be effective. We have a lot of chances and only three goals.
"I am happy because of the last goal. We have practiced that before when we need Fellaini, we put him in the penalty area because he has that quality.
"I am very happy for Memphis because a player needs that. I said it was a matter of time and hopefully he shall continue. He is 21 and he has only played two seasons for PSV, I have confidence in him.
"It is not a simple opponent. It is still a game but, because of that last goal, it is more confident for us."