The White Sox returned Drohan to the Red Sox on Wednesday, Gabrielle Starr of the Boston Herald reports.

The White Sox reinstated Drohan (shoulder) from the 60-day injured list and designated him for assignment Sunday.

Drohan (shoulder) has been transferred to Triple-A Charlotte to continue his rehab assignment, Daryl Van Schouwen of the Chicago Sun-Times reports.

Drohan (shoulder) has been transferred to Single-A Winston-Salem to continue his rehab assignment.

The White Sox placed Drohan (shoulder) on the 60-day injured list Thursday.

Drohan underwent shoulder surgery Thursday, Vinnie Duber of AllCHGO.com reports.

Dorhan was selected by the White Sox in the Rule 5 Draft on Wednesday, Pete Abraham of The Boston Globe reports.

Drohan was removed from his most recent start Sunday with Triple-A Worcester ahead of the fifth inning due to a calf cramp, Chris Cotillo of The Springfield Republican reports.

The Red Sox promoted Drohan from Double-A Portland to Triple-A Worcester on Monday, Chris Henrique of the "Beyond the Monster" podcast reports.

Drohan allowed one hit and two walks while striking out four over six scoreless innings to earn his fifth win in five starts for Double-A Portland on Thursday.