Some Louisville business and civic leaders are urging the Metro Council to approve the final land purchase for the proposed Center City project downtown.A resolution to buy the so-called Water Block and lease it to the Cordish Company to extend the Fourth Street Live complex has been held up in the council amid concerns about the city's development agreement with Cordish.Some council members want minimum investment and other guarantees from the developer.At a press conference and rally Wednesday in support of Center City, Downtown Development Corporation Chairman Jim Welch said in addition to development along the Water Block, some old space would be revitalized."Like retail and the Starks Building, and events at the Louisville Gardens. Those spaces were once prominent venues in their own right and they need to be brought back to life," Welch said.The Louisville Metro Council is scheduled to vote on the land purchase at its next meeting Thursday evening.