Jones and Kennard both spoke to the media via conference call, and said they were excited to play for head coach Matt Patricia.
"I've obviously watched what he's done in New England for a long time and always had admiration for the style of defense that he has and the type of players he develops and things like that, so I'm excited for the opportunity and I have a great first impression," Kennard said. "Great guy, great energy and he has the right mentality so I'm excited."
On offense, the Lions signed running back LeGarrette Blount. Blount finished last season with 173 carries for 766 yards and two touchdowns, as well as eight receptions for 50 yards and one touchdown for the Super Bowl Champion Philadelphia Eagles.
The Lions also added depth to their offensive line, signing unrestricted free agent guard Kenny Wiggins. Wiggins started all 16 games for the Los Angeles Chargers last season.
In addition to signing new players, the Lions also re-signed several of their own free agents. Check out the full list below:
MOCK DRAFT WATCH
Free agency is just one piece to the roster turnover puzzle, so even with all the roster moves going on, we're still keeping an eye on the upcoming NFL Draft.
Who do the experts predict the Lions will draft with the 20th overall pick? Our resident expert Mike O'Hara has Detroit taking a defensive tackle.
Click here to see what the rest of the mock drafts say.