The Washington Redskins have asked the Cincinnati Bengals for permission to interview offensive coordinator Jay Gruden and defensive coordinator Mike Zimmer for their vacant head coaching job, according to a person familiar with the situation. The Bengals were eliminated from the playoffs by losing Sunday to the San Diego Chargers. Gruden and Zimmer are available to interview for head coaching jobs and can potentially be hired immediately. The Redskins did not seek permission, at least at this point, to interview fellow Bengals assistant Hue Jackson, according to the person with knowledge of the deliberations, who spoke on the condition of anonymity because neither team confirmed the requests publicly. It is not clear if Gruden and Zimmer have agreed to interview with the Redskins and, if so, when the interviews will occur.