"This investment tax credit was surely entered into my decision making as to whether to have them come or not," Justice said.
Justice has estimated the Saints would train at the resort from July 18 to Aug. 16. Admission will be free.
The tourism bill Tomblin signed Thursday provides a separate carve-out for The Greenbrier's proposed medical institute. The medical center breaks on corporate income tax could total up to $25 million over 10 years. The $86 million facility will likely open next year, and Justice expects to draw top doctors for professional athletes.
One of the physicians, Birmingham, Ala.-based Dr. James Andrews, worked on Payton after a knee injury.
"He's second-to-none when it comes to those type of procedures," Payton said. "Hopefully, none of us have to visit."
Justice said he has more projects in the works. Including training camp and the medical center, he plans to spend $400 million on tourism projects he expects to create more than 1,000 jobs.
Justice, who ranks 362nd on Forbes magazine's list of the country's wealthiest people, bought the Greenbrier out of bankruptcy in 2009 for $20.1 million. The resort in White Sulphur Springs dates to 1778 and has hosted presidents and royalty.
It features a hotel, casino, spa, dozens of amenities and a once-secret underground bunker built for Congress in case of nuclear attack during the Cold War.