I don't think the lineup was the problem. You can't start Eze a week after he was signed with only a few training sessions with the team. It would've been too physical for Nwaneri from the start too me thinks. It was the subs, Arteta got them on too late.

It's not like Liverpool were amazing either, neither team did anything of note. Liverpool just had that one unbelievable free kick. You are right to question Arteta's intent and the timing of the subs, but neither team deserved to win that game.