Olympiacos have played one more game than us since the quarter final second legs. All important games in their title race or latter stages of the cup there. They've also go a few players suspended apparently so I think it's fine to be optimistic.
Optimistic that is, not arrogant. Not that I'm saying anyone here is being arrogant. Olympiacos probably aren't as good as Lille or ourselves but they compete in Europe every year against sides with bigger budgets and they will know they need to frustrate us in the first leg. They'll think that going back to Athens with anything better than a 2 goal deficit gives them a real chance.