A Chicago-based developer’s agreement to purchase the YMCA property in downtown Des Moines has been terminated, Axios reported. Celadon Partners had been in talks with the YMCA to purchase the building at 501 Grand Ave., with plans to renovate about half of the 146,000-square-foot space into affordable housing units. Under the plan announced last year, the YMCA would have leased a smaller space in the building. YMCA of Greater Des Moines CEO Leisha Barcus declined to comment to Axios on why the deal fell through, but said the property is now back on the market. Barcus outlined the sales-leaseback strategy a year ago to the Business Record as an effort to eliminate the  multimillion-dollar debt the nonprofit has been carrying. Insider: Read a Business Record article about the sales-leaseback strategy.