The Boston Red Sox have been at the center of trade discussions throughout the offseason. While some speculation turned into actual transactions, including deals for Garrett Crochet and Walker Buehler, many other rumors never materialized. With Spring Training less than two weeks away, trade talk surrounding the team has not slowed down.
Earlier this winter, Triston Casas found himself mentioned in trade discussions more frequently than anticipated. At one stage, Boston and the Seattle Mariners were linked, and reports indicate that at least two separate trade proposals were declined, according to Adam Jude of the Seattle Times.
Mariners’ Trade Talks With Boston
During the MLB Winter Meetings in December, a source with direct knowledge of the discussions revealed that the Red Sox and Mariners explored a trade involving Luis Castillo heading to Boston.
In return, Seattle would have received Casas along with outfielder/designated hitter Masataka Yoshida. Talks finally broke down because the Mariners were unwilling to absorb the $56 million remaining on Yoshida’s contract through 2027.
Additionally, reports suggest that in November, Boston had proposed trading Casas for either Bryce Miller or Bryan Woo, two of Seattle’s young starting pitchers. However, the Mariners turned down the offer.
Given the frequency with which Casas’ name surfaced in trade rumors this offseason, hearing about these proposals is not unexpected. What does stand out is Seattle’s apparent reluctance to engage in a deal.
Patrick McAvoy has covered both local and national sports, specializing in baseball and basketball while working with the New England Sports Network. Beyond journalism, he is currently pursuing an MBA at Brandeis University.
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Red Sox and Arenado Rumors
Speculation surrounding the Red Sox continues to gain momentum. Despite a clear need for a premier bat in the middle of their lineup, Boston has yet to make a major addition. The team has been frequently linked to Alex Bregman and Nolan Arenado throughout the offseason.
Bregman remains unsigned in free agency, while Arenado is still being floated as a trade candidate. Although acquiring either player would be a major move, discussions about Arenado have been particularly active in recent days. Reports indicate that the Red Sox and St. Louis Cardinals have engaged in trade talks regarding the future Hall of Famer.
MLB Network’s Matt Vasgersian recently addressed the possibility and expressed strong support for the idea. He suggested that a trade of this magnitude would be something Red Sox fans have long envisioned.
“Raffy Devers would likely move somewhere (like) first base,” Vasgersian said. “Triston Casas would move somewhere (like) DH. I think it would evolve from lineup to lineup, day-to-day, series to series. It would give Alex Cora a big new weapon, and it’s really something to dream on if you’re a Boston Red Sox fan.”
Arenado’s fit with Boston is easy to understand. While his power numbers have dipped in recent seasons, he remains one of the greatest defensive third basemen of all time.
His bat could be more effective at Fenway Park than it has been in St. Louis, and he is under contract for three more years. Meanwhile, acquiring Bregman would likely require a higher financial commitment. The bigger question is what the Red Sox would do with Devers and Casas if Arenado were brought into the mix.
