The Arnesen thing is confusing me. It seemed him and Big Mac (TM you're welcome) were muddling along OK, and O'Connor was doing OK as the sitter in front. But Del sees things different I suppose.
He seems to really fancy Kenny Mac deep in that "Quarterback" position, but for me, McLean's strength is playing higher, finding pockets in tight areas, creating. I dinna think he's the type of player that can dictate fae that deep.