The Chicago White Sox and left-handed pitcher Chris Sale have agreed in principle on a five-year contract extension worth as much as $60 million, according to a league source. Sale will receive $35 million guaranteed over the first three years of the deal with club options for the final two that could add an additional $25 million, according to the source. The 23-year-old Sale, who went 17-8 with a 3.05 ERA and made the All-Star Game in his first season as a starter, said Thursday morning he was trying to stay focused on pitching. "I just try not to concentrate on any of the external things going on," Sale said. "It is just like leaving your wife and family home sick and you try not to bring that to the field with you. So I will just go about my business and everything will kind of work itself out." White Sox general manager Rick Hahn has always been proactive when it comes to signing quality young left-handers. During spring training 2002 he helped then-GM Kenny Williams tie up Mark Buehrle to a three-year, $9 million deal. The Sox also tried for three years to sign John Danks to a long-term deal before signing him to a five-year, $65 million contract in the fall of 2011. In his third major league season, Sale was scheduled to make $600,000 in 2013.