Basically, Matt Welch brought up the best reasoning for Bill Stoneman to play tough with Theo and the Scarlet Stockings:

Manny's Non-Fenway Avg/OBP/SLG past four seasons:

2002: .360/.458/.635
2003: .320/.405/.595
2004: .301/.392/.584
2005: .280/.363/.573

It is called a steep decline.
You can keep him Epstein.
Slowly whither on your team, not mine.

And we are supposed to give John Henry top rated prospects without John John eating any salary for this crap? Yeah right. Escobar, Napoli and Erstad are my final offer. Trade you Fonzie for Lowell if you want to throw them in.