Should former Super Bowl winning coach Jon Gruden end up leaving the broadcast booth and returning to coaching, his most likely destinations would be Oakland or Atlanta, according to league sources, should those jobs open up. The Raiders made a serious approach to Gruden last year, according to sources, and owner Mark Davis remains highly enamored of him, and is still evaluating coach Dennis Allen and general manager Reggie McKenzie. Gruden coached previously in Oakland and retains strong ties there and landing him would be a major coup for the Raiders. A year ago, with Allen and McKenzie in their first years on the job, it would have been even more financially restrictive to sweep out a regime and usher in a new one, let alone a staff as highly compensated as Gruden's would be. That's lessened some, one year later, and several sources who know Gruden well believe he is more inclined now than ever to return to the sidelines after rebuffing repeated overtures in the past.