For the most part what OJ said I agree with. I would pass on McCann though. Let me start by saying that I think he is a really good catcher/hitter. This is why I think the Sox should stick with Salty. McCann as a FA is going to cost a lot more then Salty. Are you going want to invest big $$$$$ on a soon to be 30 year old catcher. Offensively Salty has improved this year, and is even hit a little from the right side. Everyone saw how the transition from the Captain to Salty hurt the pitching. Now that the pitchers are getting more comfortable throwing to Salty are we going to want to bring in another new catcher that has to learn the whole pitching staff. I think the Sox stick with Salty until Swihart or Vazquez is ready for the job. I find it hard to invest big $$$$$ in a catcher because of the injury factor being so great.
I kind of like the idea of 3 year 75 million offer to Ellsbury. You are over paying, but for probably the three best years Ellsbury has left as the type of player he is. I like the idea of Bradley-Ellsbury-Victorino outfield. Great D! Gomes could still get ABs against lefties and Nava as your 5th outfielder that switch hits. Nava also can play some first and I think he is more productive if he isn't over used. Ellsbury probably wouldn't take that offer though. The Sox do have some extra $$$$ there so I would not be opposed of them spending it on Ellsbury.
As far as the Lester / Peavy resigning, I'm not sure what will happen. Remember at some point some of these young arms (Barnes, Owens, Ranaudo, etc.) are going to start to make their way to Boston.