Detroit's urban farmers have been waving their pitchforks indignantly over it for years, but a controversial agriculture deal between the city of Detroit and a wealthy investor looks like it may finally be heading to market. The Detroit Free Press reports that mayor Dave Bing's group executive for planning and facilities, Karla Henderson, is close to finalizing a sale that would allow the Southfield-based financier John Hantz to transform 175 acres of vacant east side lots into a commercial lumber farm. The mayor hopes to close on the transaction -- estimated to be in the realm of $600,000 -- with his business, Hantz Farms, when city council gets back from its summer recess, according to the Free Press. The deal seems to have had little input from Detroit's City Planning Commission (CPC), however, which operates under the authority of city council. A letter from CPC President Marcel Todd, Jr.