The Cubs have expressed some interest in former White Sox set up man Jesse Crain . Checking medical s as are several clubs.
— Bruce Levine (@MLBBruceLevine) December 24, 2013 
Crain, 32, spent the last three years as a setup man for the Cubs’ cross-town rivals. He posted an 0.74 ERA with 11.3 K/9 and 2.7 BB/9 in 36 2/3 innings for the White Sox in 2013, although he suffered a shoulder injury in June and missed the rest of the season. The White Sox traded him to the Rays in July, but he did not make an appearance for Tampa Bay.
For more on this story visit: Charlie Wilmoth, MLB Trade Rumors