The Washington Nationals are entertaining a possible trade that could lead to a seismic shift in Major League Baseball.

The Nationals are open to trading outfielder Juan Soto after the All-Star turned down a huge contract offer from the organization, according to Ken Rosenthal of The Athletic. Soto rejected a 15-year, $440 million offer from the Nationals, a contract that would have made him the highest-paid player in MLB history, albeit not in average annual value. Soto’s agent, Scott Boras, typically takes his clients to free agency to test their value on the open market.