He's not absolutely at fault at all, he should have known I don't dispute that but the blame doesn't solely fall at his feet.
This is why football clubs have back room staff.
You could conversely say - if the manager doesnt bother to find out why should those who are paid far less than him bother?
Back room staff should know , Pellegrini needs to know
edit . in general there seem to be some really nasty teams in 2nd spot in their groups to bite "favourites" in the *** if they arent careful.

