(CNN) -- Boston Red Sox have agreed to sign outfielder Carl Crawford in a record-breaking $142 million deal, and fellow newcomer Adrian Gonzalez is expected to pen an even bigger package.
Crawford's seven-year contract means he will become the first Red Sox player to earn an average of $20 million per season, the Major League Baseball club's official website confirmed on Thursday.
And pending a final physical examination, the 29-year-old -- a free agent after nine seasons at Tampa Bay -- will pen the 10th-richest contract in baseball history.
He will be the second-highest paid outfielder of all-time after the $45 million two-year deal for Los Angeles Dodgers player Manny Ramirez.
Earlier this week, the East Coast club unveiled San Diego Padres first baseman Gonzalez as part of the batting line-up at the Fenway for 2011. He was acquired in a trade with the Californian club on an initial $6.3 million deal.
According to the Red Sox website, Gonzalez is expected to sign a seven-year contract worth $154 million before he becomes eligible to be a free agent at the end of 2011.
"Nothing that we did was the product of a last-minute idea," Boston general manager Theo Epstein said following the annual "Winter Meetings" between the MLB clubs' general managers.
"It was all a product of a well-thought-out plan over a long period of time, and well-documented with lots of scouting, following players over the course of whole half-seasons, white papers written up about how the parts all fit together, a lot of thought and lot of commitment and belief -- and commitment to winning and belief from ownership."
In 2010, the injury-hit Red Sox -- whose owner John W. Henry recently took over English soccer club Liverpool -- finished third in the American League east division and failed to reach the playoffs for the first time in four years.
Both new players will be vital to the seven-time World Series winners, who last won the pennant in 2007, and free-agent pitcher Cliff Lee is expected to join them according to the Red Sox website.
En route to the 2010 American League playoff final, Crawford batted 19 home runs for the Rays, stealing 47 bases, scoring 110 times with a leading 13 triples.
He has hit over .300 in five of the last six seasons, and this year set career highs in both home runs and runs batted in.
Meanwhile, Gonzalez is a two-time National League winner and a three-time All-Star pick.
He was the first draft selection while at high school but was traded by Florida Marlins to the Texas Rangers, where he made his MLB bow in 2004 before joining the Padres two years later.