ARLINGTON, TX – NOVEMBER 05: A Dallas Cowboys helmet at AT&T Stadium on November 5, 2017 in Arlington, Texas. (Photo by Ronald Martinez/Getty Images)The Dallas Cowboys are having an extremely disappointing 2018, as the team is under .500 at the halfway point of the year, and there are some who think a change is eventually coming at head coach.Cowboys owner Jerry Jones has been very loyal to Jason Garrett, and he’s said that no coaching change is coming during the season, but it’s quite possible that one will come in the offseason.If that change does happen, who will the Cowboys look at to replace Garrett?One NFL insider reports that a major college football head coach could be a candidate.The Cowboys’ ownership is reportedly very interested in Oklahoma head coach Lincoln Riley.From NFL.com:While Garrett’s job should be safe through the balance of the season, the team has potential replacements on their radar should they feel compelled to make a move.“If they do end up replacing Jason Garrett at the end of this season, I’m told both [Cowboys executive vice president] Stephen and [owner] Jerry Jones have an affinity for [Oklahoma coach] Lincoln Riley,” Rapoport reported. “So the Cleveland Browns, if they’re interested in Baker Mayfield’s old coach, may have some competition.”Riley has said that he doesn’t have the “itch” to leave Oklahoma for the NFL, but it could be tough passing on the Cowboys job.ESPN college football analyst Kirk Herbstreit said during the offseason that it wouldn’t surprise him if Riley eventually left for the Cowboys.“It wouldn’t surprise me at all to see the NFL, within a few years, knock on his door and try to get him to leave,” Herbstreit told The Dallas Morning News. “He’s as hot as he can be, as not just a head coach what he did with his first year but also as a playcaller. If and when the Cowboys ever need a head coach, it wouldn’t surprise me if the Jones group considered him.”The Cowboys and the Eagles, meanwhile, are set to kick off at 8:20 p.m. E.T. The game will be on NBC.