There was also a late change to the substitutes' bench as Luke Shaw was forced to withdraw after initially being named as one of the seven players on standby. Andreas Pereira took his spot.
French striker Anthony Martial, who scored the Reds' first equaliser against the Gunners in midweek, is missing with injury after being forced off during the second half with a suspected hamstring problem.
Martial’s place in the attack is taken by Romelu Lukaku. The Belgian scored against Southampton two games ago and came off the bench against Arsenal, as Mourinho insists Lukaku won’t be put under pressure.