Diop made the move in March 2026, ending a complicated international story. He represented France through the youth ranks and was also eligible to play for Senegal before choosing the Atlas Lions.
His first appearance for Morocco ended in a 1-1 draw with Ecuador, but the Brazil fixture represents a far greater examination. With Morocco regarded as Africa’s leading hope of a deep tournament run, Diop’s experience in English football could prove especially valuable.
At 29, he is among the more seasoned players in the squad. He has been with Fulham since 2022, following earlier spells at West Ham United and Toulouse.
Mourinho’s description was striking, but it came when Diop was still establishing himself in the Premier League. The defender’s challenge now is different: organise a new international back line against one of the competition’s heavyweight sides.
Brazil, coached by Carlo Ancelotti, should test Morocco’s concentration, defensive positioning and ability to withstand pressure. Diop’s role will not be limited to winning challenges. His communication and composure could determine whether Morocco remain competitive when Brazil control possession.
The old Mourinho endorsement also explains why Diop once attracted attention as a possible Manchester United target, although that move never materialised. His international switch offers a fresh opportunity to turn potential into a defining stage performance.
The next storyline is clear: can Diop lead Morocco’s defence through its toughest group fixture and help the Atlas Lions take another step towards the knockout rounds? Brazil will provide the answer.