I understand, but i'm referring to the perspective the Red Sox would take in this situation. Cutting him would still cost you money, give you the tax hit (which they have been reportedly been avoiding) and leave a hole in your lineup.
I think this is what you're referring to.
The problem is, that for purposes of the luxury tax (i know it's not what you were talking about, but bear with me here), the player would still be considered a part of the club for the "championship season". The only way to get rid of the burden of his salary from the tax is to cut him under the circumstances i mentioned above.
If luxury tax issues are to be ignored, however, then it would be possible to cut him paying him a bit more than a sixth of his salary.