Assuming they trade Gray, they still need at least another SP.
Tanaka, Severino, Paxton, Sabatha.......
I doubt htye plan to run Montgomery, Adams or AJ Cole out there every 5th day.
I don't see the Grandal fit at all. Seems like a poor use of resources.
Now if the Sox trade Narvaez and Collins this offseason, maybe it makes more sense.
Not only a loss of pick, but catcher isn't really the position the sox should be spending big dollars. They already have 2 major league catchers on the roster, and another two interesting prospects that are pretty close. Much bigger holes to fill.
If you take out Avi's unsustainably high BABIP-fueled 2017, he has been a pretty terrible player. He's a low OBP corner outfield that sucks defensively. He isn't woth the $8-10M he will would get in arb. He's probably looking at 1 year deal around $5M with someone else if the Sox non-tender him, and he may very well outperform that contact. But his time with the Sox is likely over. Its time to move on.
Avi is a non-tender candidate because he has one year of control left at a price that is higher than what he brings to the table. He'd be a nontender candidate regardless of his injury.