Pittsburgh Steelers safety Mike Mitchell, center, goes through drills with the defense during an NFL football organized team activity on Thursday, May 29, 2014 in Pittsburgh. (AP Photo/Keith Srakocic)
Pittsburgh Steelers safety Mike Mitchell, (23) goes through drills with the defense during an NFL football organized team activity on Thursday, May 29, 2014 in Pittsburgh. (AP Photo/Keith Srakocic)
New Orleans Saints cornerback Champ Bailey (27) takes a knee during an NFL football minicamp in Metairie, La., Thursday, May 29, 2014. (AP Photo/Bill Haber)
New Orleans Saints cornerback Champ Bailey (27) runs a drill during an NFL football minicamp in Metairie, La., Thursday, May 29, 2014. (AP Photo/Bill Haber)
Philadelphia Eagles' head coach Chip Kelly speaks during a news conference before an NFL football organized team activity Thursday, May 29, 2014, in Philadelphia. (AP Photo/Matt Rourke)
Philadelphia Eagles quarterback Mark Sanchez speaks with members of the media after an NFL football organized team activity Thursday, May 29, 2014, in Philadelphia. (AP Photo/Matt Rourke)