Daou is a youth product of FC Septèmes, Marignane Gignac and SC Air Bel, before moving to the reserves of Marseille in 2021 on a contract until 2024.[2] In the 2022–23 season he made an appearance on the senior match day squad for a Coupe de France match against Hyères FC.[3]
Daou is a versatile midfielder who likes to participate and contribute with the ball. He is strong at holding the ball and releasing it up the field, and makes himself available for passes. He is able to play all across the midfield and defensive backline.[2]