A team source said that Adrian Gonzalez passed his physical at Mass General today.
Now, according to Ken Rosenthal of Fox Sports, the sides have until 2 p.m. tomorrow (ET) to come to an agreement on a contract.
Gonzalez is signed through the end of the 2011 season for $6.3 million. Gonzalez could get a signing bonus of some sort and an extension of six years or so. The Ryan Howard contract (five years for $125 million plus an option) could be a template of sorts for the deal.
Gonzalez may not get quite that much, but this will a landmark contract for the Red Sox.