Watch out fellow managers, you might see a champions league match set for tomorrow afternoon / night and power train your players accordingly but after tonight's reset, your 1 st league match will be added to your schedule. It is possible for you to have another match in the morning....
Happened to me last season with a league match early in the morning. I was totally unprepared with tired players and not the right formation
Let your players rest well to be ready in the morning - choose a generic formation your players like and kiss em goodnight