BOULDER, Colo. -- University of Colorado football coach Deion Sanders announced Monday that he underwent surgery to remove his bladder after doctors discovered a tumor there. Sanders, Kukreja and Colorado team trainer Lauren Askevold spent just over 40 minutes answering questions that have swirled around Sanders in the offseason. "It is a learning curve, for sure,'' Kukreja said of postsurgical life for bladder cancer patients. In July, his son Deion Jr. posted a video on social media in which Deion Sanders is heard saying that he was dealing with a health issue and that "I ain't all the way recovered." This will be the first season Deion Sanders doesn't coach a high school or college team with Shedeur at quarterback.