Conversation so far:
What role did Theo Epstein play with the Red Sox?
became president and chief executive officer (CEO) of the Red Sox.
What year did he become president?
November 15, 2001 and hired Epstein to work under him.
How long did Epstein work with the Red Sox?
At the end of the 2002 season, Lucchino appointed Epstein to replace interim general manager (GM) Mike Port.
How long did Epstein remain the GM?
On October 31, 2005, Epstein resigned, rejecting a three-year, $1.5-million-per-year contract for personal reasons.
What did he do after rejecting the contract?
Epstein remained in contact with the team's front office and on January 12, 2006, he and Red Sox management announced his return.

Question: What was his official position when he returned in 2006?
Self-contained rewrite: What was Theo Epstein's official position when he returned in 2006?