Direct from si.com...
The Red Sox locked up another key piece on Thursday, as Kevin Youkilis agreed to a four-year, $40 million contract through 2012 with an option for 2013, SI.com has confirmed.
The 29-year-old infielder established himself as a top-tier run producer in 2008, batting .312 with 29 home runs and 115 RBIs and making his first All-Star team. Youkilis would have been eligible for arbitration.
The Youkilis deal, which was originally reported by ESPN.com, comes just six weeks after Boston signed 25-year-old second baseman Dustin Pedroia to a six-year contract worth $40.5 million. Pedroia and Youkilis finished first and third, respectively, in American League MVP voting last season.
The Red Sox are also attempting to sign electric closer Jonathan Papelbon to a long-term deal, but they haven't been able to reach an agreement thus far.