Humana's management is exploring options for its pharmacy-benefit management business including an outright sale of the division, which some say could fetch as much as $7.1 billion. Humana's management, led by CEO Bruce Broussard, said in early May that it would consider alternatives for Humana Pharmacy Solutions. The unit is estimated to produce about $15.5 billion in revenue this year. Analysts say among the options being considered, are renegotiating pricing on generic drugs, outsourcing certain operations or selling the unit altogether. Likely buyers of the pharmacy benefits unit could include CVS Caremark (CVS), Express Scripts (ESRX) and Catamaran (CTRX).