In the 2025 Club World Cup round of 16, Real Madrid relied on Arnold's assist to Gonzalo Garcia to score, and finally defeated Juventus 1-0 and successfully advanced to the quarterfinals. Courtois said that Arnold is a player who can make opponents nervous, and praised this teammate for helping the team to improve.

The score of this game changed in the 54th minute of the second half. Arnold took the pass from his teammate and passed it in front of the goal. Gonzalo Garcia jumped up and headed the ball into the goal, helping Real Madrid take the lead 1-0.

In the following time, Juventus goalkeeper Di Gregorio kept blocking Real Madrid's shots, but Real Madrid eventually eliminated Juventus 1-0 and successfully obtained a ticket to the Club World Cup.

Real Madrid goalkeeper Courtois said, "The team's defensive investment was excellent, and that was the key. We played an excellent game, and it is always more reassuring not to concede a goal."

"The effectiveness of the defense depends on the moment of the game and how the opponent runs. If everyone in the team runs as actively as in this game or the game against Red Bull Salzburg, it will be very difficult for the opponent to break our goal. We had many chances in the second half, but the opponent's goalkeeper performed very well. Fortunately, we still scored a goal, and our defensive performance was really good."

In addition, Real Madrid's opponent in the quarter-finals of the Club World Cup is Dortmund, while Niko Kovac's team defeated Monterrey 2-1 in the round of 16.

"It would be great to play against Ramos, but we don't know them as well as we do against Dortmund," Courtois said. "But every game is not easy and we have to respect our opponents, which is why this tournament is so exciting."

In addition, Arnold, who joined Real Madrid not long ago, contributed assists to the team for the first time in the match against Juventus. Courtois said, "He has been able to provide several assists in this tournament. His performance in the last game against Pachuca was very exciting. During training, his shots were incredible, and his free kicks and corner kicks were at a very high level."

"I don't think I've ever seen a player with the quality of his crosses and shots. As a goalkeeper, he can be a nightmare at times. He forces you to stay focused and make saves. He makes us improve."

Courtois also said, "I feel that we are constantly improving. We often watch videos to try to improve ourselves. Every game we play is smoother. This is the right direction. I hope we can go all the way to the final."