New York – Crain’s New York recently released the CoStar Group’s 2006 roundup of the largest Manhattan office leasing deals and Loeb & Loeb’s Commercial Real Estate Group handled four in the top 35, three of which were in the top 20. The deals included 245,000 rentable square feet at 345 Park Avenue South to Digitas Inc.; 221,000 square feet at 199 Water Street to Aon Corporation; 205,000 square feet at One World Financial Center to Willis Group Holdings; and 136,000 square feet at 261 Madison Avenue to Primedia Inc.