Astros owner Drayton McLane and general manager Tim Purpura met with Roger Clemens' representatives Randy and Alan Hendricks on Tuesday to present the parameters of their offer to the future Hall of Famer. Neither side would publicly confirm the actual amount of the offer, but a person close to the negotiations has said the Astros would start the negotiations at no less than a pro-rated amount of the record $18 million Clemens earned last year. "We put forth a very strong number," Purpura said. "It's always hard to know, it's impossible to know what numbers are out there."