In the new NIL era of college basketball, John Calipari has learned that he will have to adjust his approach. The new Arkansas head coach primarily made his name at Kentucky, Memphis and other stops off of routinely signing the top freshmen in the country. Calipari achieved plenty of success doing so, reaching six Final Fours and even leading the Wildcats to a national title in 2012. But today is a much different environment than it was back then. Speaking at the SEC spring meetings on Wednesday, the coach opened up about how his roster-building process has changed in light of what he’s learne…