What’s the point in previewing a game if you don’t bring on the guy who played for both programs during his playing days in college? Nate Sestina was once a Wildcat, but he was also a Bison before making his way to Lexington to wrap up his career. Now he gets to watch his alma mater, Bucknell, take on his other former team, Kentucky, where he met his fiancee and would later call home for good. He previewed the matchup on Sources Say while also talking about his playing days at both schools, the transition from John Calipari to Mark Pope, life overseas as a pro while also living in Lexington du…