Tenn. Code Ann. § 12-3-506

In accordance with rules and regulations of the central procurement office approved by the procurement commission and adopted pursuant to title 4, chapter 56, and chapters 3 and 4 of this title, the chief procurement officer is authorized to negotiate with vendors who maintain a general services administration pricing agreement with the United States or any agency thereof; provided, that no contract executed under this section shall authorize a price higher than is contained in the contract between the general services administration and the affected vendor.