Until O'Brien comes back Ardley thinks we have nobody else because he clearly doesn't think Crawford is even a footballer for some reason, despite him already having experience in this division, where he played well for a team that made the playoffs.
Rose came back from pre-season twice the size and half the player he was in League 2, presumably thought he needed to bulk up for a more physical league but all it's done has slow him down, at least once a game he gets caught in possession trying to back into a player and play his way out of trouble and failing to do so.