From the New York Post:

... Through his agents, Clemens told the Astros yesterday he is ready to begin working with the team as a consultant. It is the most telling indication the 45-year-old righty may be ready to hang up his cleats. ...

"The plan for 2008 is this: Roger plans to start the new year as the first year of his post-playing career contract as a consultant to the Houston Astros," Hendricks said. "Roger really enjoys the teaching aspects of baseball and loves his interaction with the young players."