Wisconsin coach Paul Chryst said before a spring football season is planned, there has to be a discussion about fall 2021. He said conversations about a spring football season have been minimal, but there has been a theme. If the NFL does nothing to accommodate spring college football some of the sure-things are almost certain to leave. There is so much to sort out, including the NCAA signing off on a spring football season. At this point in time, we'll see.__Follow Ralph D. Russo at https://twitter.com/ralphDrussoAP and listen at http://www.westwoodonepodcasts.com/pods/ap-top-25-college-football-podcast/___More AP college football: https://apnews.com/Collegefootball and https://twitter.com/AP_Top25