You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Joyce King Thomas Returns to McCann, Will Lead New Division for MasterCard New Chief Harris Diamond Insists Model Is Different Than WPP's 'Team' Approach for Clients By Rupal Parekh, Published on December 18, 2012 1 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Register Now Already a member? Log in.