The top acquirer of merchant card transactions in the U.S. wants to buy a top U.S. processor of business-to-business card payments. Vantiv expects to complete the purchase of Paymetric this quarter. Terms were not disclosed. Paymetric has been owned by private equity firm Francisco Partners since 2013. Vantiv shares trade on the New York Stock Exchange. Integrating card payments into the work flow of enterprise resource planning (ERP) software and customer relationship management (CRM) software has been the focus of Paymetric since 1998. It facilitates more than 100 million transactions ann...