Granderson is a nice guy; that's what makes this decision hard. But sadly for the Yanks center fielder, nice doesn't win championships.
Grandy had a good regular with 43 homers and 106 RBI, but his dreadful .232 average finally caught up to him in the postseason. He was 3-for-29 with one homer and a RBI, but struck out 16 times in the postseason.
While he was responsible for a great deal of the Yanks' production this season, Granderson simply hasn't gotten it done in the playoffs in pinstripes and likely never will.
New York needs to add better hitters to their lineup, and Granderson does not qualify as such. This team has no shortage of all-or-nothing hitters, so a guy like Grandy isn't exactly special to this roster.
Besides that, he isn't a great defensive center fielder, so there won't be much of a loss there.
The Yanks do have a club option for 2013 for $15 million, but there is a $5 million dollar buyout in his contract which is a move the Yanks would be smart to exercise.
That money could certainly be better spent elsewhere.