Mason Miller, who long has been considered off-limits in Athletics trade discussions, actually could be on the trade block.

The Green and Gold might be inclined to move on from the MLB All-Star closer if they receive a compelling offer from one of the league’s top contenders, The Athletic’s Ken Rosenthal reported Monday.

“A year ago, Athletics closer Mason Miller was untouchable,” Rosenthal wrote. “To this point, the A’s messaging this season – we’re not talking about him – is pretty much the same. But according to sources briefed on the team’s plans, that stance is subject to change.

“The way the A’s see it, only a few teams are bold enough to propose an offer for Miller worthy of consideration. General manager David Forst might engage those teams as the deadline nears. But for now, he appears willing to let them grow more desperate.”

Miller, 26, would be a grand addition to any club. 

The righty has collected 47 saves since becoming the Athletics’ closer to start the 2024 campaign and holds a 3.22 ERA for his career. Known for his dynamite fastball, Miller has earned 57 strikeouts in 35 2/3 innings during the 2025 MLB season and 199 strikeouts over 100 career appearances.

Rosenthal expects some top teams to be in play for Miller.

“The Philadelphia Phillies, who reached agreement Sunday with free-agent reliever David Robertson, probably would be No. 1 on the list,” Rosenthal wrote. “The Los Angeles Dodgers, with free agents Tanner Scott and Kirby Yates performing below expectations, almost certainly would be in the mix. So would the New York Yankees, who face the losses of Devin Williams and Luke Weaver to free agency.

“The San Diego Padres just sent three relievers to the All-Star Game, but general manager A.J. Preller can never be ruled out on top talent. Nor, for that matter, can Seattle Mariners president of baseball operations Jerry Dipoto.”

Miller would cost a pretty penny, as his contract is one of the biggest bargains in baseball. Under team control through 2029 through salary arbitration, Miller is making $765,000 in 2025.

Rosenthal doesn’t consider Miller to be a shoo-in to be traded, as many analysts do with A’s ace Luis Severino. Though, if a team makes an enticing deal that meets the A’s “exorbitant” price tag, then serious conversations likely will proceed regarding Miller.