J.C. Jackson, Dont'a Hightower 'most likely to leave' in free agency?
Dont'a Hightower reportedly looking for second opinion on his knee - Pats Pulpit
Dont'a Hightower, Marcus Cannon among five Patriots to opt out of season
ESPN's Mike Greenberg: Belichick will lead Patriots to AFC East title
Has free agent Dont'a Hightower played his last game for the Patriots? - Pats Pulpit
Hightower reportedly will not play for Patriots this season
4 more years: Hightower re-signs with Patriots, makes his 'proud momma' dance
New ESPN two-round mock draft has Patriots double up on defense
Rob Ninkovich - Wikipedia
NFL on ESPN - Breaking: New England Patriots LB Dont'a Hightower announced that he has retired from the NFL.
After starring for Patriots, why is Dont'a Hightower still on market? - ESPN - New England Patriots Blog- ESPN