Manchester United boss Erik ten Hag wants his players to perform with passion at Sevilla on Thursday night.
United go into the second-leg of the Europa League quarterfinal tie with the score locked at 2-2 on aggregate.
Ten Hag said: "The timing of emotions is important in big games - we must focus on the best game you can as a team and individual.
"Defensively we are good, we have the most clean sheets in the Premier League so our organisation all over the pitch is good and attacking we should have scored more goals over the season.
"I am confident, especially now we have all the players on board, we score every game.
"We played over 60 minutes quite well and the last 30 minutes we became passive - it is not acceptable, we know that," said ten Hag.
"When you only play a game for 60 minutes you get punished."