The move, if it happens, would position MGM as a major East Coast player with resorts in Springfield, Atlantic City and National Harbor, Maryland.
MGM Resorts International, the world's second-largest casino company and the developer of the $950 million MGM Springfield project, is reportedly in discussions to buy the Sands Bethlehem casino in Pennsylvania's Lehigh Valley.
Neither side is commenting on the potential deal, according to a story in the (Allentown) Morning Call newspaper Friday. The Call cites sources including a Pennsylvania state senator.
Sands is the largest casino operator.
The Bethlehem deal could be worth $1 billion.
Pennsylvania Gaming officials have confirmed to the Call that there is a deal afoot for the Sands to sell the Bethlehem casino, and Sands notified its Bethlehem employees.
The move would continue a major East Coast expansion for Las Vegas-based MGM Resorts.
The 14-acre MGM Springfield project is set to open in the fall of 2018. In December, MGM opened the $1.4 billion MGM National Harbor resort in Maryland.
In 2016, MGM bought out Boyd Gaming's shares of the Borgata in Atlantic City and became that resort's sole owner.
MGM executives have said they plan to market the East Coast resorts together with Las Vegas properties as a package leveraging an already large database of gamblers developed through the company's rewards program. Las Vegas customers in the database who live in the East will get marketing materials for these resorts, for example. An MGM Springfield customer would be encouraged to take a Vegas vacation at MGM's properties there.
Opened in 2009, the Bethlehem Sands has 2,5000 employees and attracts 9 million visitors a year to a site that was once the heart of Bethlehem Steel. Sands has talked about a $90 million expansion.
But recently, 146 security guards at Sands Bethlehem voted to unionize. Las Vegas Sands CEO Sheldon Adelson is famously anti-union.
This isn't the first time Adelson has shopped the Bethlehem Sands to potential buyers. He worked on a rumored deal with Tropicana and Carl Icahn back in 2014.
The Bethlehem Sands is about a four-hour drive from Springfield. The Borgata is about five hours away.
Related photo gallery -- MGM Springfield construction: