Jude insinuates that "one of the 4 young pitchers is what it takes to get Casas." You made it sound like you were agreeing close to a 1:1.
What incentive do the Red Sox have to trade Mayer? There's nobody blocking him and he's a top prospect that will debut for them in '26. Their roster isn't good enough to trade from the strength of their farm. There's no middle infield depth at the MLB level for them or even close on the farm other than Mayer.
Conversely, why would the M's trade for Mayer? 3 of the top 5 prospects are SS prospects... all top 100. 2x with the M's within the next 2 seasons. Mayer doesn't help the M's in '25... trading Gilbert and getting a prospect back weakens the team's biggest strength for a year they're trying to contend.
The M's just don't match up as trade partner's with the Red Sox when it comes to trading MLB pitchers. Why wouldn't they just work a deal with the White Sox for Crochet purely with prospects and call it a day?