From Ken Rosenthal:

The Yankees are aggressively shopping right-hander LaTroy Hawkins, two rival executives say, intending to clear a spot for a reliever who currently is at Class AAA. Righty J.B. Cox, who missed all of last season after undergoing elbow-ligament transplant surgery, is one candidate; he began the season at Class A, but has since moved to AAA, where he has allowed one run in 12 1/3 innings. Righty David Robertson, who began the season at AA, also has been impressive at AAA. Hawkins, signed to a one-year, $3.75 million free-agent contract, has a 6.08 ERA in 22 appearances...

Via Steve.