Maamma has emerged as one of the standout stars of the FIFA U-20 World Cup Chile 2025, playing a pivotal role in securing Morocco a first-ever FIFA title. His exceptional performances earned him the adidas Golden Ball as Player of the Tournament, after delivering four assists and scoring a goal. The winger currently plays for English Watford, having joined the club in July 2025 for an undisclosed fee from French side Montpellier. In November 2025, he was crowned CAF Men’s Young Player of the Year. As of December 2025, his market value stood at $1.5 million, according to Transfermarkt.