Tom Glavine and the Mets are deep in discussions about a two-year, $25 million contract that should be completed shortly, a source told the Daily News. Glavine, who has shared a stage with John Smoltz and Greg Maddux throughout their distinguished major-league careers, would prefer not to enter the Hall of Fame in the same class as Maddux, according to a source. Maddux figures to retire after the '07 season, meaning Glavine would need to pitch through '08 to ensure they are in separate classes if both are elected on the first ballot.