Mike Zimmer returns to Vikings Winter Park on Wednesday

Cincinnati Bengals defensive coordinator Mike Zimmer returned to Winter Park, the Vikings headquarters, on Wednesday.

Mike Zimmer, Bengals Def. Coordinator, back at Winter Park this morning #Vikings pic.twitter.com/G15setcVn6

— KARE 11 (@kare11) January 15, 2014

It's his second day in Minnesota after undergoing a second interview with team's general manager Rick Spielman and ownership group.

Mike Zimmer meeting again today with Vikings officials at Winter Park. We'll see if he gets a job offer today.

— Chris Tomasson (@christomasson) January 15, 2014

The general belief is that if Minnesota asks Cardinals defensive coordinator Todd Bowles for a second interview, or any of the San Francisco 49ers assistants that they've already interviewed, that Zimmer would be out. However, it still appears likely that the Bengals defensive coordinator is the top candidate.

It was originally believed that Zimmer was going to get the job on Tuesday. But after a full day of interviews, the Vikings haven't offered him the position.

According to Ian Rapoport with the NFL Network, discussions on Tuesday was "all positive from both sides". No offer is made, nothing firm, but Vikings progressively becoming optimistic that he's their guy.

No job offer for Mike Zimmer from #Vikings. But it was all positive from both sides. Lot of optimism that he’s the guy. But nothing firm

— Ian Rapoport (@RapSheet) January 15, 2014