Larsson played in 64 games this past season, collecting three goals and 21 assists. The fourth pick overall in the 2011 NHL draft, the 22-year-old played his best hockey in the second half of the season.
Gelinas, 24, has six goals and 13 assists in 61 games.
Matteau, the Devils' first-round pick in 2012, had a goal in seven games after being called up from Albany (AHL) late in the season.
Helgeson spent time in Albany and New Jersey last season, collecting two assists in 22 NHL games.