Disgruntled pitcher Felix Doubront has been traded to the Chicago Cubs, according to ESPN sources. The Red Sox are expected to get a minor league prospect after the Rule 5 draft is held.

Doubront was unhappy when he got sent to the bullpen after making 10 starts. He had asked to be traded and seemed uninterested in pitching lately. He is 2-4 with a 6.04ERA. He is 26 years old.

Cubs president Theo Epstein was with the Sox when Doubront was signed as a free agent from Venezuela in 2006 at age 16.