Kyle Walker was called on as an emergency goalkeeper after Claudio Bravo was sent off in a chaotic 1-1 draw with Atalanta in Group C.
Claudio Bravo (Manchester City) sees red and is sent off in Milan after 86 minutes.
The Former Barcelona goal keeper was later sent off for a challenge on Illicic. And Walker was called up as an emergency goal keeper .
Manchester City had earlier lost Ederson due to injury.