Few things have revolutionized college sports quite like the transfer portal has the past few years. In big-time college football, teams can immediately look for upgrades to their roster year to year, whereas before they had to wait on high schoolers and players from the JUCO ranks to help. On the Wednesday evening edition of SEC Media Days from Dallas, Nick Saban and the crew shared their thoughts on the transfer portal in college football. First, Sam Acho shared his thoughts on the portal and how important team chemistry is in building a roster. “I think there’s a difference between adding d…