Career
He last played for in the Algerian Ligue Professionnelle 1. In the summer of 2009, Demmou was linked with a move to Military Cross Oran. However, his club, Société Anonyme Mohammadia, refused to sell the player.
In the summer of 2010, Demmou was again linked with a move away from his club, this time to USM El Harrach.
Société Anonyme Mohammadia put a 5 million Algerian dinars price tag on the player. He ended up joining the club in July with the transfer details not disclosed.
On May 1, 2011, Demmou was a starter for USM El Harrach in the 2011 Algerian Cup Final against JS Kabylie. However, they ended up losing the match 1-0.