The Patriots signed rookie cornerback Alfonzo Dennard to a four-year contract. The seventh-round pick was the 224th overall selection in the 2012 draft.
Veteran offensive lineman Jamey Richard, 27, also signed with the Patriots. Richard can play guard and center. He was a seventh-round pick of the Colts in 2008.
Dennard was ejected from the 2012 Capital One Bowl for fighting with Alshon Jeffery of South Carolina. He was an All-Big Ten pick in 2011 as a senior and named the conference's top defensive back.
However, he didn't stand out in postseason workouts or in January's Senior Bowl and was arrested in April -- five days before the draft -- for suspicion of assaulting a police officer in Lincoln, Neb.