Option #4: NFL Draft
Similar to free agency, the NFL Draft does not offer a true option for the Denver Broncos at center. One name that could pop up is Kansas State Wildcat Dalton Risner. He has played around the line during his time in Manhattan, Kansas.
Because of his versatility, he could be a player that John Elway keeps an eye on. Another option for the Denver Broncos is Connor McGovern, the Penn State offensive lineman. Imagine the Denver Broncos having two players on the offensive line with the same name. Pretty funny if I do say so myself.
Another option could be Lamont Gaillard from Georgia.