An MRI scan showed the Algerian has minor knee ligament damage.
He will miss the Ligue 1 match at Nice on Sunday and is also ruled out of the UEFA Cup clash against Spartak Moscow the following Wednesday.
Copyright (c) PA Sport 2008, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms