Frenchman Diaby ruptured a tendon in his thigh during a reserve game on Monday and will be sidelined for eight-weeks, putting his Euro 2008 spot at serious risk.
"But we have lost Abou Diaby too. He was supposed to come back after suspension but he got an injury that will rule him out until the end of the season.
"The problem occurred during a reserve game. It was a simple pass and he ruptured the tendon in his thigh muscle. It will be at least eight weeks for him.
"Sagna and Flamini are not back so basically it will be the same squad as last week.
"Almunia is available again but I have not decided what I will do with the goalkeepers yet."