Buster Posey has helped the Giants win two World Series titles in short time and they are expected to discuss a "blockbuster" extension with him at some point this spring.

In 308 games, Posey has a .318/.384/.503 batting line with 46 home runs. A Super Two player, he is eligible for arbitration for the first time this offseason and won't hit free agency until 2017.

Given his projected 2013 salary of $5.9 million, Posey's four arbitration years could likely be bought out for somewhere in the $36-40 million range.