Mike Zimmer

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FILE - This is a 2013 file photo showing Mike Zimmer of the Cincinnati Bengals NFL football team. The Minnesota Vikings have chosen Zimmer as their new head coach, according to multiple media reports. Zimmer will replace Leslie Frazier, who was fired after the team finished 5-10-1 this season. (AP Photo/File)

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FILE - IN this Sept. 17, 2013 file photo, Cincinnati Bengals defensive coordinator Mike Zimmer watches from the sidelines in the second half of an NFL football game against the Pittsburgh Steelers, in Cincinnati. The Minnesota Vikings have chosen Zimmer as their new head coach, according to multiple media reports. Zimmer will replace Leslie Frazier, who was fired after the team finished 5-10-1 this season. (AP Photo/David Kohl, File)

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FILE - IN this Jan. 5, 2014 file photo, Cincinnati Bengals defensive coordinator Mike Zimmer adjusts his head set in the second half of an NFL wild-card playoff football game against the San Diego Chargers, in Cincinnati. The Minnesota Vikings have chosen Zimmer as their new head coach, according to multiple media reports. Zimmer will replace Leslie Frazier, who was fired after the team finished 5-10-1 this season. (AP Photo/David Kohl, File)