I think guys like Iglesias and Kalish if healthy will be given a shot to take over full time spots next year. I'm also leaning toward the idea of them signing 1/3 of those 2nd tier FA's. I don't think Laroche will sign here knowing that as soon as a better option comes along, Boston is likely to trade him away again. At this point he is at the very end of his prime and the Sox would probably end up paying for more of what he's done then what he's going to do.
I said earlier in the off season there was 3 avenues the Sox could take, go big(Grienke, Hamilton), that doesn't seem likely anymore.
Field a competitive team with shorter deal FA's(Napoli, Swisher, Ross, Haren, so on) that would reduce the teams current roster flexibility.
Or go the youth movement and save their money and look to spend it later in the season-future off season(s) for trades or different FA options.
With Napoli and Swisher rumors and Lester being called about it seems the other 2 options are still possibilities at this point. We will see here soon which is the more likely path this off season.