Young would earn $5 million each in 2008 and 2009, and the contract also would contain a $6 million option for 2010 that would become guaranteed if he has 500 plate appearances in 2009 or 900 combined in 2008 and 2009. Details of the deal were provided by a person familiar with the talks who spoke to The Associated Press on condition of anonymity because no announcements were authorized.
Young, who signed a minor league contract with the Nationals in February after a troubled 2006 season in Detroit, has been one of baseball's most surprising success stories this season.
He ranks eighth in the National League in hitting at .331, and was Washington's representative on the 2007 NL All-Star team. Young had recently been mentioned in several trade rumors as a candidate to go to a contender before baseball's July 31 non-waiver deadline.
Young will become the second player to sign a contract extension with the Nationals this week. Second baseman Ron Belliard agreed to a two-year, $3.5 million deal with the club Monday.
Information from The Associated Press contributed to this report. Jerry Crasnick covers baseball for ESPN.com. His book "License To Deal" was published by Rodale. Click here to order a copy. Jerry can be reached via e-mail.