The Red Devils faced a three-goal deficit after a disappointing first-leg result in Bilbao. To get back into the game, they needed a strong start at Old Trafford. Initially, it was Athletic Club who looked more threatening, but Manchester United struggled to assert their dominance in the first half.

Manchester United's slow start was highlighted when Athletic Club's Mikel Jauregizar scored a sublime long-range goal. However, the visitors continued to press for another goal before halftime. In the second half, the pattern of play remained similar, with Athletic Club on the front foot. Despite creating clear chances, they were unable to score.

Manchester United made a triple substitution in the final 20 minutes, which helped them take control of the game. The equalizer came when substitute Mason Mount scored a clinical goal, turning sharply in the box and bending the ball past the goalkeeper. This goal all but ended the tie, and Manchester United took the lead just eight minutes later when Casemiro headed in a free-kick from Bruno Fernandes.

The Red Devils sealed their place in the final with two late goals. Rasmus Højlund finished off a pass from Amad Diallo, and Mount scored a spectacular long-range strike after a mistake from the goalkeeper. This win gives Manchester United a chance to salvage a difficult season with silverware and Champions League qualification.