Prince Andrew broke down after hearing about his ex-wife Sarah Ferguson’s health battle, according to a sensational report which claims the disgraced royal is fearing the worst. “Andrew is terrified Sarah is going to die,” a high-level palace courtier spilled, RadarOnline.com has learned. The Duchess of York revealed in January that she has been diagnosed with malignant melanoma after battling breast cancer. Her spokesperson said it was “distressing” for Fergie to deal with another struggle like this so soon after treatment but that she is strong and remains “in good spirits.” “Sarah is his ro…