Bears, Eagles and Chargers have interest in Colts offensive coordinator Bruce Arians

Below is a Saturday afternoon look at the NFL head coach and general manager rumor mill:

Arizona Cardinals: After firing Ken Whisenhunt, the Cardinals were believed to be the early favorites to land former Eagles head coach Andy Reid, who signed with the Chiefs. The Cardinals have had two interviews with current defensive coordinator Ray Horton and requested, and were granted, permission to interview Pittsburgh Steelers offensive coordinator Todd Haley, who was the Cardinals' offensive coordinator from 2007-08. The Cardinals are scheduled to interview Denver Broncos offensive coordinator Mike McCoy on Saturday.

As for the Cardinals' GM search, in-house candidate Steve Keim, the team's vice president of player personnel, will interview for the position and is the early favorite to replace Rod Graves.

Buffalo Bills: CEO Russ Brandon is leading the search and has been busily interviewing candidates this week.The Bills interviewed former Cardinals head coach Ken Whisenhunt and current Cardinals defensive coordinator Ray Horton early in the week. The Bills interviewed former Bears head coach Lovie Smith, Oregon head coach Chip Kelly and Syracuse head coach Doug Marrone on Friday and are scheduled to interview Broncos offensive coordinator Mike McCoy on Saturday.

[More NFL: New Chiefs coach Andy Reid must find a more effective QB]

Carolina Panthers: We added the Panthers to mix because head coach Ron Rivera is scheduled to meet with owner Jerry Richardson on Saturday. The Panthers fired GM Marty Hurney during the 2012 season and Rivera was no lock to return in 2013. However, the Panthers closed out the regular season on a high note, winning four straight and five of their last six to finish 7-9, a finish that saved Rivera's job as he will return in 2013, ESPN's Adam Schefter reports.

Former New York Giants GM Ernie Accorsi is consulting on the Panthers' search for a new general manager and the club has requested permission from the Giants to interview director of college scouting Marc Ross and senior pro personnel analyst Dave Gettleman for their vacancy. The search process for a GM is expected to ramp up next week, with interim GM Brandon Beane and Tennessee Titans vice president of player personnel Lake Dawson also on the candidates list, reports Joseph Person of the Charlotte Observer.