Sorry to hear for your loss.
When your close to someone especially your mother its probably the saddest day and time of your life when she passes away.
Tomorrows match will mean nothing to you no matter how passionate you are about City.
I hope though the side does you and your mother proud from now on.
Only you can understand how your feeling right now even though many of us including myself have lost a parent.
Stay as strong as you can in these difficult times and treasure the good times and memories as much as you can.
She will look down on you with her guiding hand for the rest of your life until you get together again someday.