Getty Denver Broncos linebacker Alex Singleton. The Denver Broncos have one of the NFL’s most unique players in inside linebacker Alex Singleton — a mix of toughness, skill, and leadership few players can say they possess. It turns out that other teams might really want that kind of player on their roster. We’ll find out exactly how much on Monday as NFL free agency opens, although 1 Broncos insider is already predicting a robust market for Singleton. “There might not be a bigger discrepancy