Haissem Hassan had 126 World Cup minutes. Celtic wants the next test.

Haissem Hassan played 126 minutes at the 2026 World Cup. Those minutes took him from a delayed arrival in Egypt's squad to a starting place against Argentina, a 2-0 lead over the defending champions, and a four-year move from Real Oviedo to Celtic. 1

The tournament made Hassan visible. Celtic now has to find out whether the winger can make that visibility repeatable every week.

Hassan started Egypt's last-16 match against Argentina and created Mostafa Zico's goal. He beat Enzo Fernández, drove in a precise cross, and later carried the ball through two challenges before setting up another dangerous move. Egypt eventually lost 3-2 after Argentina's comeback, but Hassan's direct running changed the match's shape. 1

The performance arrived after Hassan had already helped Egypt beat Australia in the last 32. He missed the group phase because of a registration delay, then finished the tournament with only two appearances. That small sample made the Argentina match louder than the rest of his World Cup résumé. 1

Hassan was born in Paris, played for France's under-17 and under-18 teams, and later chose Egypt, his father's birthplace, for senior football. He began at Châteauroux, moved to Villarreal, spent loan spells at Mirandés and Sporting Gijón, and joined Oviedo in 2024. 1

Oviedo won promotion with Hassan's help in his first season. La Liga was harsher: he recorded three assists and no goals in 37 appearances as Oviedo finished last. The record describes a winger who has had to keep moving before he could settle. 1

Celtic signed Hassan on an initial four-year deal with an option for another year. BBC Sport reported that he is left-footed, often plays on the right, and could become the team's right winger in Martin O'Neill's fluid attack. 1

Argentina showed what Hassan can do when the game opens in front of him. Celtic will ask for the same threat when opponents close the space and expect him to create chances on schedule. His World Cup gave him the audition. The club season is the verdict still waiting to be written.