Since missing out on what was widely speculated to be their top three candidates, Bill O'Brien, Doug Marrone, and Chip Kelly, the Cleveland Browns have to take their search for a head coach in a different direction. That search remains ongoing.

Jay Glazer, NFL insider for Fox Sports, reported via Twitter that the Browns are bringing in Bengals defensive coordinator Mike Zimmer for an interview later today.

Browns are bringing in Bengals DC Mike Zimmer for an interview later today for their head coach opening.Really like this fit for them.

— Jay Glazer (@JayGlazer) January 9, 2013

Zimmer has been a defensive coordinator since 2000, working for the Dallas Cowboys until 2006, then spending a season with the Atlanta Falcons in 2007, before landing with the Bengals where he's worked to now.

After the interview, Zimmer will be among a total of four prospective coaches that are still available that the Browns have formally interviewed so far.

[UPDATE] - Mary Kay Cabot of The Plain Dealer reported that the Browns will also interview Carolina Panthers offensive coordinator Rob Chudzinski today.

Breaking: #Browns interviewing Panthers OC Rob Chudzinski today in Berea, source tells PD. Former #Browns coordinator.

— Mary Kay Cabot (@MaryKayCabot) January 9, 2013

Like a few of the other candidates, Chudzinski has a history with the Browns, having served as offensive coordinator in Cleveland from 2007-2008. After his time with the Browns, he worked as a TE coach and assistant head coach for the San Diego Chargers, before taking the offensive coordinator position for the Panthers in 2011.

Below is a tentative list of potential candidates for the Browns head coaching position and their status with the Browns, if any, presented in no particular order.

The Potential Candidates:

1. Marc Trestman - Montreal Alouettes head coach
   Status: Interviewed by the Browns
2. Ken Whisenhunt - Former Arizona Cardinals head coach
   Status: Interviewed by the Browns
3. Ray Horton - Arizona Cardinals defensive coordinator
   Status: Interviewed by the Browns
4. Mike Zimmer - Cincinnati Bengals defensive coordinator
   Status: Interviewed by the Browns
5. Rob Chudzinski - Carolina Panthers offensive coordinator
   Status: Interviewed by the Browns
6. Bruce Arians - Indianapolis Colts offensive coordinator
   Status: Browns reportedly interested
7. Lovie Smith - Former Chicago Bears head coach
   Status: No reported interest from Browns
8. Greg Roman - San Francisco 49ers offensive coordinator
   Status: No reported interest from Browns
9. Mike McCoy - Denver Broncos offensive coordinator
   Status: No reported interest from Browns
10. Kyle Shanahan - Washington Redskins offensive coordinator
    Status: No reported interest from Browns
11. Jon Gruden - ESPN analyst, former Tampa Bay Buccaneers head coach
    Status: Conflicting reports - Mary Kay Cabot reported Browns might pursue Gruden, Mike Florio reported the opposite.
12. Jay Gruden - Cincinnati Bengals offensive coordinator
    Status: No reported interest from Browns
13. Bill Cowher - CBS analyst, Former Pittsburgh Steelers head coach
    Status: Cowher said he "expects" to coach again.
14. Bill O'Brien
    Status: Staying with Penn State
15. Doug Marrone
    Status: Hired by the Buffalo Bills
16. Chip Kelly
    Status: Staying with Oregon

The list will be updated as news breaks.