Ohio Public Employees Retirement System, Columbus, issued an RFP for a general investment consultant. The contract of the $75 billion system's current consultant, Ennis Knupp, expires June 30, said Richard Baker, Ohio PERS spokesman. Ennis Knupp can rebid. The RFP is available on the fund's website at www.opers.org/aboutOPERS/RFPs/2007/Inv-Consulting-Svcs.pdf; proposals are due Feb. 9. Mr. Baker said semifinalists will be interviewed at the fund's April 17 board meeting; board members hope to make a selection by June 30.