Talks between the two teams began last Friday after the new labor deal was reached. The discussions only heated up as the week went on, and became official on Tuesday.
The 27-year-old lefty recorded five straight All-Star seasons in Chicago, and is coming off a 17-10 season where he recorded 233 strikeouts in 226.2 innings. The perennial Cy Young candidate will only cost the team $12 million in 2017, and that will raise to just $13.5 million by 2019.
Many in the baseball world believed Sale was on his way out of Chicago at the trade deadline this past season due to his rough relationship with the organization. The ace was vocal about his displeasure regarding the Adam Laroche incident involving his son in Spring Training. Sale also had an incident involving the team's throwback uniforms, which the lefty cut into pieces because he didn't want to wear them. He was suspended five days as a result of this.
Despite the off-the-field issues, Sale continues to get it done on the field. In his career, he has a record of 74-50 with a 3.00 ERA and 1,244 strikeouts in 1,100 innings over seven seasons. He now moves on to a Boston team who is coming off a 93-69 season, compared to the White Sox, who hasn't reached the playoffs since 2008.