The YMCA of Greater Des Moines has signed a letter of intent with a Texas developer for the purchase of the Riverfront YMCA at 101 Locust St., YMCA Executive Director Vernon Delpesce said. The agreed price is $4.75 million, he said. The developer, who has been involved in other Greater Des Moines projects, plans to the raze the structure for a mixed-use development. Delpesce said he did not know what those uses might be. He would not identify the buyer. At one time, it was believed that a project on the Y property, located along the Des Moines River, would be turned into an upscale apartment building with restaurants and other retail uses. Such a scheme might not be feasible, and the project could include a mix of hotel rooms and apartments in addition to retail uses. Delpesce said a formal purchase agreement could be signed in the next 30 to 60 days. The property has been marketed by Tim Sharpe and Linda Gibbs of CBRE|Hubbell Commercial. The property also had drawn the interest of a Wisconsin developer, but a final purchase agreement could not be signed. A local developer also had expressed interest in the project, Sharpe said.