There's also the risk of paying a guy over $200 million and he gets hurt. Certainly Chris Sale on your roster injured under contract hamstrings the team a lot more than the guy you signed for one year.
I'm also not overly concerned with the stats a guy puts up a year he is injured or working his way back from injury, it certainly takes more than a year to return to normal for many players.
Les not forget that these moves are not uncommon for even the NY Mets or the Dodgers, we've just grown accustomed to Boston doing so without swimming in the deep end. They didn't get Buehler and Sandoval, they got Buehler, Sandoval, and Crochet. To me that high end ace talent changes how Buehler looks in the rotation.
The cost is $21 million, the upside is a guy who is well worth it and nets you a draft pick.
A good coaching and scouting department should be able to identify the guys who they can work with who are more likely to return to a peak performance or something close to it. Sox haven't been that great in that department in recent years but I will give Breslow and friends their chance.
I also don't think they're done, we have almost 2 months left until pitchers and catchers report.