Kamil Glik is having treatment on a right thigh injury picked up in the last game.
Stevan Jovetic is nursing a sore left calf.
Keita Balde continues to have treatment on a left thigh injury picked up in the last game.
Diego Benaglio is out with bruising to his left knee sustained in the match on 23 March.
Pietro Pellegri and Adama Traoré are both continuing their rehabilitation.