Super Bowl-winning head coach Bruce Arians will be undergoing open-heart surgery on Feb. 6 as the latest development with his health problems. It’s unknown why the 73-year-old is undergoing surgery this time. While on the “Today” show as a guest alongside former top NFL tight end Rob Gronkowski, Arians made the announcement while promoting a Super Bowl commercial about prostate cancer screening after he was diagnosed with it in 2007 and had cancerous cells removed from his nose in 2013. The two-