The Red Sox claim that they want to be competitive in 2015. They need atleast two more top pitchers to do that. You can get one via trade, but giving up prospects for two top pitchers is going to hurt, so they will likely get one via free agency. Who's out there?
The best guys are Scherzer, Lester, Shields, Beckett, Peavy. Scherzer will cost twice as much as Lester. Shields will cost a ton, at a higher age. Beckett no. Peavy isn't an AL East pitcher.
The next group consists of dumpster dives with Brandon McCarthy, Justin Masterson, Wandy Rodriguez, Josh Johnson, Gavin Floyd, Josh Johnson Jorge De La Rosa. None of those guys have been good and healthy this year.