Speaking to talkSPORT, O’Leary said of Arteta: “I don’t think he’s put a foot wrong off the field.
“There are things that he’s done that nobody knows about. But what you can say, what he’s come in behind the scenes and done has just been absolutely fantastic.
“The way he’s handled himself, the way he’s handled himself through this crisis and the things he’s done without seeking publicity, the things he’s implemented structurally at the club, I don’t think he’s put a foot wrong.
“I think he has a hard task, without a doubt, he’s come in and taken a hard job on. He needs players.
“The squad he has he will make better. Will that push them towards being a top-four club? No, I don’t see that.
“I think where he is going to be judged is on recruitment. It’s easier said than done, but you’ve got to get players out.
“That’s hard to do and he’ll be judged on that, but he’ll also be certainly judged on the personnel he brings in