There's a quiet rule change working its way through the college football governance machine right now and if you're an Arkansas fan, you'd better pay attention. It's not flashy. Nobody's dropping a tweet storm about it. But for a program still searching for its footing under a brand-new head coach, it could mean the difference between playing a bowl game in December and sitting at home watching everyone else. The NCAA's Football Oversight Committee voted Thursday to adopt a proposal that gives conferences the flexibility to choose a 5-7 team that has met specific academic standards to fill bowl game opportunities when there aren't enough other deserving teams available. That's a meaningful shift from the way things have worked up until now and it's the kind of procedural tweak that could quietly reshape which programs find themselves in a bowl destination this coming winter. Ryan Silverfield is heading into his first season leading the Hogs. Building a winning culture takes time.…