Country: England
I see people make excuses about how some signings were not really "Emery signings" if that excuse is valid, it is valid for Arteta also. It can`t work both ways.
Emery was coach. Arteta is manager.
Whilst I believe Arteta puts his foot down when he needs to and pushes for certain players harder than others, I do think club signings are club signings and a collaborative effort.
I don't think Pepe happens with Mikel at all, where as Emery got told to make it happen. Could add Özil and Auba to that too, I believe Emery would have been stuck with them.