you shouldn't even be thinking about Hanley as a midfielder. Won't reach top bracket of premiums in that line. Greene on the other hand could reach top bracket of forwards if you're lucky.
Love Hanley but would not pick him as a midfielder unless he was ridiculously cheap for some reason, such as getting a low score after being concussed.
Port with a favourable draw early Gray showing that form that he finished with.
Really comes down to what you have to spend and how your structured, also which will be the most likely to be a keeper by years end.