The Milwaukee Brewers are believed willing to offer close to $100 million over five years to free-agent-to-be Zack Greinke, according to a person familiar with their thinking. But people close to the team hold little hope that Greinke will sign in mid-season with the Brewers to pass up free agency. Brewers president and GM Doug Melvin, who declined comment on their contractual negotiations with Greinke, acknowledged that star players on the cusp of free agency rarely bypass the opportunity. "I can't get into what the offers are,'' Melvin said, "but players at that level who get this close to free agency do tend to test the market.''