Yep, need options for alternative formations and strategies. If Emery had joined the club and we had nothing but wingers, we'd be playing a totally different way. He makes use of what we have, rather than trying to fit players to systems they are not suited too. I'm sure i've read from him that he want's players that offer something he doesn't already have, I think he was referring to a striker, but no reason why it wouldn't apply to other roles.