Also, a bad contract, signed by a GM that has since been fired (and somehow did even less with what many of us would consider a "smart" organization than Bloom did in his time in Boston). Though for what it's worth (on AAV) Soler is signed for a year less and at $4m less than Yoshida, for better production (at least using career OPS+ and wRC scores). The Braves will pay 2/$32 in real money (but only 2/$28m/$14m in terms of AAV).
Yoshida's deal is really bad. Doesn't mean he will be (or should be) DFA'ed, to be clear, but it's a really bad contact.
FWIW, I think that if Boston did offer to send Yoshida somewhere and cover about $15m (thus making Yoshida about $13m in terms of AAV, and thus similar to Soler's cost) they could probably get someone a little less valuable than Ceballos since Yoshida is a little bit less valuable than Soler (in a vacuum). MLB.com has Atlanta with the 27th best system in baseball, so lets say in terms of players we know, Ceballos inside their top 20 is probably about on par with Conrad Cason (23rd on Sox Prospects). Based on the current roster, I'd much rather have another version of Cason and $14m in savings toward the AAV than Yoshida.
If that deal exists for Yoshida, I'd want the Sox to jump on it. I wouldn't even care if they got the prospect back.
All of this, of course, operates under the assumption that Duran, Rafaela, Abreu, Anthony, Story, Campbell and Grissom are all with the organization on Opening Day, 2025. If someone (most notably Abreu) is moved a spot opens up where a LHH DH only isn't a huge drag on the roster, the equation changes a little, though it would be far better if said DH could hit LHP, but it wouldn't be as bad, fit wise. This all has more to do with Yoshida being an incredibly bad fit on Boston's roster than on the player on his own accord, for the record.
Labrum issues aside, while I hate going back to Seattle all the time, I could see a scenario with a deal like Yoshida + $20m (covers roughly 35% of the contract) to the Mariners for someone like Cole Phillips or Dylan Wilson (19th and 26th in their system overall, 9th and 13th in terms of pitching prospects, but both are incredibly far away) making sense for both teams.