Does this recent Cardinals-Mets mock trade concept have any merit?

A recent SI blog post that has since found its way to social media posed the concept of the Cardinals swapping Sonny Gray for Mets SP Kodai Senga.

Senga, with two years at $15 million a piece remaining on his contract, is reported to be “extremely available” in trade talks this winter as the Mets look to retool their pitching rotation. Gray, as we know in St. Louis, is on the trade block as the Cardinals work with the 36-year-old to find a soft landing spot for him amid their rebuild. 

But after seeing this trade concept pop up on my Twitter timeline, I’ve got to throw some cold water on the notion that a Senga trade for the Cardinals’ veteran right-hander is realistic.

Gray has one year remaining on his deal with St. Louis, valued at a hefty $35 million—the three-year pact was heavily backloaded, leading to 2026 being easily the most expensive of the three. There is also a $5 million buyout of a 2027 option to consider, bringing the remaining guarantees on Gray’s deal to $40 million.

So from the Cardinals’ perspective, you could see the appeal. Send Gray (14-8, 4.28 ERA in 2025) and the value of the buyout to New York to gain access to two years of Senga (7-6, 3.02 ERA in 2025) for a slightly lesser cost than what you’d owe Gray for one year.

Perhaps if the Mets are resigned to believe that Senga is damaged goods after his various injuries over the past two years—he’s spent time on the IL due to shoulder, calf and hamstring issues—then they could be desperate enough to unload the 32-year-old right-hander for less value than we might believe at first glance.

But the Cardinals don’t necessarily accomplish getting younger, nor do they save as much money as they would if they can swap Gray for a prospect or two while convincing the other party to pay down a notable portion of Gray’s 2026 salary.

It’s probably unrealistic to expect a team to pick up the entire remaining tab on Gray’s deal, but saving cash is definitely the goal I would expect a rebuilding franchise to aim to achieve if unloading an asset like Gray. Swapping into Senga could provide more value on the field (pending the durability risks) but it doesn’t necessarily fit the rebuild perfectly.

Beyond those questions on whether targeting Senga matches the way the Cardinals want to handle Gray as a trade asset is an element of any Gray trade that cannot be overlooked: The no-trade clause.

While Senga has a limited 10-team no-trade in his contract that very well may include a team like St. Louis in rebuilding mode, Gray has the ability through his no-trade clause to veto any destination.

Considering his history in the New York market with the Yankees organization—it was short-lived and not especially productive, with Gray’s 4.90 ERA in 2018 representing the second-worst single-season mark of his MLB career—I would be floored to see Gray agree to enter the lion’s den for another round at this stage of his career.

It just doesn’t seem like New York is a viable fit, comfort-wise, for the veteran player who so carefully considered his geographic options when landing in St. Louis a couple years ago.

So, no, Sonny Gray for Kodai Senga isn’t a likely conclusion to the Cardinals’ winter maneuvering. It’s another reminder to take these pie-in-the-sky trade fabrications with a grain of salt. Hell, even less than a grain of salt.

As entertaining as they may be, always consider the context behind the mock trade rumors that you see floating around social media.