Before I post I need to clarify. I like Posey. I appreciate his contribution to the team. But I don't what that to color his potential re-signing with the C's. Many others have rightly pointed out that letting Damon, Pedro, and Lowe walk was hard to swallow, but doing so directly led to a second title just three seasons later.
I just want to point out that Posey has been the exact same player for the past 3 seasons. He looked "great" on Miami when they won the title in '05-'06. However, he could not cash in on the hype because he was under contract for one more season. in '06-'07, Miami completely imploded, and Posey, though he posted the exact same numbers as the year before, looked much worse. As such, a one-year deal for 3.2 million from boston was his best option. Let's not pretend that Posey was some desirable asset that really wanted to play for boston. he was a less-than desirable free agent that wanted to play for a good team for one season to inflate his salary options; this is why he had a player option in his contract and not simply a multi-year 3.2 per year contract.
And it worked, because even though he was the exact same player contributing the exact same things as he did on a terrible miami team, he suddenly was doing those things on a champtionship team, and has successfully inflated his stock to be in line for a multi year deal at 5.8 per. Posey is a player who depends on having good teammates around him to make him look more valuable. Otherwise, where were the offers LAST offseason, after a nearly identicle season to this one in every respect but team success.
Yes, Posey does the little things, but i think you can find a lot of players who can do the little things and look good on a team like boston had last year. And i think we can find multiple pieces for better prices with more flexible/optimistic futures.