I like the idea of getting Hosmer if Doubront and maybe Bailey (or another reliever not named Tazawa or Morales) would be enough. Then BC has to sign Haren and Sanchez or possibly Marcum. I also like signing Ichiro for a 1-year deal with mutual option. Sox do not need to sign Upton and Bourn to long-term deals. In two years they will have Bradley and Brentz, very much similar production with far less cost and much more devotion to the team, IMO.
But Napoli?. No. And trade for V-Mart? Not going to happen without including Barnes and/or Bradley. Just not worth it. He is a great hitter, and a team leader, but a mediocre 1bman defensively and an on-going injury risk on the wrong side of 30 (and by more than just a bit).
I would much rather the Sox re-sign Youkilis (though I do not expect this to happen) than pay 4/40 for Napoli, especially if they trade for Hosmer first. All you need then is a bridge. Youk will have offensive numbers very similar to Napoli in all likelihood, and he is far better defensively. He is also likely to cost much less than what folks here are suggesting Napoli is worth. Sox do NOT need a Napoli as a backup catcher, even if Salty or Lava are traded (Butler as the 3rd string catcher 45 minutes away in Pawtucket is enough).
Remember, Napoli is NOT going to be batting in Fenway facing the pitchers who made him so successful in his two-a-year visits here. He will not have the same success here in a Boston uniform as he did in an Angels or Rangers uniform.