Mets, Santana Hitting "Snag"

From Jayson Stark/ESPN:

The Mets, not surprisingly, differ on the dollars. But the biggest obstacle appears to be the length of the deal.

Reportedly, Santana is looking for a six-year $150 million extension, while the Mets would prefer to keep it to five years with a vesting option for the sixth.

But really, as much as I would love to see all of this fall through, I just don't see it happening.  For one, Santana's agents and the Mets have a good working relationship dating back to negotiations with other clients.  Second, and most importantly wouldn't it make good sense for both sides to drive a hard bargain right up until the very end in an attempt to get the other side to give up as much as possible?  That's just business.

Link: ESPN - Sources: Mets likely won't reach deal with Santana until Friday, if at all - MLB.