New York City Retirement Funds will issue a new RFP for a domestic equity index manager to run $40 billion because the system received only a handful of responses between five and 10 to the RFP issued in the spring, said Jane Levine, deputy comptroller for the $90 billion system. The system wants to broaden the pool of applicants, she said. The city expects to make a decision in the fourth quarter. Alan Hevesi, New York City comptroller, said the system was prompted to put out a new proposal because several key staffers left the citys current index manager, Bankers Trust, to join Merrill Lynch. The city is not re-issuing RFPs for an enhanced index manager and a value manager, which went out at the same time.