Emery said: "Ainsley is training with us as normal. Mkhitaryan also played 45 minutes on Monday with the under-23s.
"We thought last week that with two training sessions after six weeks being injured, it was not enough to play against Manchester City.
"But after this week, playing with the under-23s and working with us, I think it is the first time I can think about him being with us.
"Aubameyang is sick but I think he's okay for Saturday. Also yesterday, Laurent Koscielny was sick but today he is training well. I think the other players are well and will be OK for Saturday."