The 24-year Hayward was limited to three games in 2013 because of hamstring issues after intercepting six passes the previous campaign. Hayward was one of the Packers’ two second-round picks in 2012.
Nixon, 25, appeared in three games this season. He did not practice this week because of a knee injury.
Worthy, 23, had suffered an ACL tear at the end of the 2012 regular season. He appeared in 14 games for the Packers as a rookie last season, notching 14 tackles and 2.5 sacks. A Michigan State product, Worthy was the other of the Packers’ second-round selections in 2012.
Richardson played five games for Green Bay in 2012 before suffering a season-ending neck injury. He is a second-year pro from Vanderbilt.