Why not aim higher? Only trade top prospects for a top of the rotation anchor -- BTV accepted: Mayer, Yorke, Houck and Schreiber for Alcantara and Garcia. BTV gave Schreiber a high 20.4 rating, but the Fish might want a younger arm instead (where the Sox' farm is maybe deepest).
Dealing Mayer, of course, is entirely contingent upon extending Bogaerts longterm -- which, if it happens, we have to assume Bloom and Co. are confident that any nagging injuries that sapped his production will soon be fully healed.
Will another $180 million keep X in Boston? It's not $300M, but still makes him a $30 million-dollar man for the next eight years (an additional $10M per on top of his existing $20M for the next three, plus $30M per for the final five, which will take Bogie through age 38)... is that fair enough?