Johnny Manziel

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Texas A&M quarterback Johnny Manziel is surrounded by the media as answers a question during a news conference at the NFL football scouting combine in Indianapolis, Friday, Feb. 21, 2014. (AP Photo/Michael Conroy)

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Texas A&M quarterback Johnny Manziel answers a question during a news conference at the NFL football scouting combine in Indianapolis, Friday, Feb. 21, 2014. (AP Photo/Michael Conroy)

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FILE - In this Oct. 6, 2012, file photo, Texas A&M quarterback Johnny Manziel throws a short pass in the first quarter of an NCAA college football game against Mississippi in Oxford, Miss. A record 98 underclassmen, including Manziel, have made themselves eligible for the NFL draft in May. (AP Photo/Rogelio V. Solis, File)

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Texas A&M quarterback Johnny Manziel watches from the sidelines during the first half of the NCAA BCS National Championship college football game between Auburn and Florida State Monday, Jan. 6, 2014, in Pasadena, Calif. (AP Photo/Mark J. Terrill)

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Texas A&M quarterback Johnny Manziel smiles from the sidelines during the first half of the NCAA BCS National Championship college football game between Auburn and Florida State Monday, Jan. 6, 2014, in Pasadena, Calif. (AP Photo/David J. Phillip)

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Texas A&M quarterback Johnny Manziel (2) is chased by Duke linebacker Kelby Brown (59) and nose tackle Jamal Bruce (91) in the first half of the Chick-fil-A Bowl NCAA college football game Tuesday, Dec. 31, 2013, in Atlanta. (AP Photo/Jamie Martin)