If the move went ahead, the agency, which has £182.6m in billings, would become the New York office and headquarters of WPP's Red Cell network.
Berlin Cameron & Partners founder Andy Berlin has confirmed the agency is in talks and plans to find a buyer to help the agency expand internationally.
The agency was recently a surprise winner in Coca-Cola's agency roster shake-up. It retained the Mello Yello and Pibb accounts, while WPP and the Interpublic Group of Companies picked up the bulk of the other brands.
Other clients handled by Berlin Cameron include Reebok and General Motors.
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