Perhaps the issue is too complicated for some.
Naturally the Red Sox would not have designated Hanley Ramirez for assignment if the front office thought the club would need to pay the vesting option.
The issue is what happens to the vesting option, a negotiated benefit of value to the player.
Ramirez through his agent presumably negotiated the vesting option to seal the deal. Perhaps Ramirez would not have signed on that date if he knew the Red Sox would not give him a reasonable opportunity to meet the conditions of the vesting option. After all, Ramirez -- who this year hit third in the batting order 38 times and second six times -- was on pace for the option to vest.
I don't have a definite answer ... I have only questions.