Kyle Shanahan

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San Francisco 49ers head coach Kyle Shanahan, left, watches practice with general manager John Lynch during NFL football training camp Friday, July 28, 2017, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

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San Francisco 49ers head coach Kyle Shanahan, right, and general manager John Lynch field questions during the NFL team's football training camp Thursday, July 27, 2017, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

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San Francisco 49ers general manager John Lynch, left, and head coach Kyle Shanahan field questions during the NFL team's football training camp Thursday, July 27, 2017, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

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San Francisco 49ers head coach Kyle Shanahan smiles during NFL football practice at the team's training facility Tuesday, June 13, 2017, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

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San Francisco 49ers head coach Kyle Shanahan, right, and general manager John Lynch watch the team's organized team activity at its NFL football training facility Tuesday, May 23, 2017, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

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San Francisco 49ers head coach Kyle Shanahan answers questions from reporters during a media conference Friday, March 10, 2017, in Santa Clara, Calif. (AP Photo/Ben Margot)

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San Francisco 49ers head coach Kyle Shanahan answers questions during an NFL football press conference Thursday, Feb. 9, 2017, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

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San Francisco 49ers head coach Kyle Shanahan, right, and general manager John Lynch field questions during an NFL football press conference Thursday, Feb. 9, 2017, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

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San Francisco 49ers head coach Kyle Shanahan answers questions during an NFL football press conference Thursday, Feb. 9, 2017, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

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San Francisco 49ers head coach Kyle Shanahan, center, answers questions next to general manager John Lynch, left, and owner Jed York during an NFL football press conference Thursday, Feb. 9, 2017, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

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San Francisco 49ers head coach Kyle Shanahan, right, and general manager John Lynch pose for photos during an NFL football press conference Thursday, Feb. 9, 2017, in Santa Clara, Calif. (AP Photo/Marcio Jose Sanchez)

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Atlanta Falcons offensive coordinator Kyle Shanahan speaks during a news conference while preparing for the NFC divisional playoff football game against the Seattle Seahawks, Wednesday, Jan. 11, 2017, in Flowery Branch, Ga. (Curtis Compton/Atlanta Journal-Constitution via AP)

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FILE - In this Dec. 18, 2016, file photo, Atlanta Falcons offensive coordinator Kyle Shanahan walks on the turf before the first half of an NFL football game between the Falcons and the San Francisco 49ers, in Atlanta. Broncos general manager John Elway began his third coaching search in six seasons with a visit to Kansas City on Friday to interview Chiefs special teams coach Dave Toub. Elway and his committee, which includes team president Joe Ellis and player personnel director Matt Russell, will then travel to Atlanta to meet with Falcons offensive coordinator Kyle Shanahan over the weekend. (AP Photo/John Bazemore, File)

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Cleveland Browns offensive coordinator Kyle Shanahan, center, goes over the play sheet with quarterbacks Brian Hoyer (6) and Johnny Manziel in the third quarter of an NFL football game against the Houston Texans Sunday, Nov. 16, 2014, in Cleveland. (AP Photo/David Richard)