No financial terms were disclosed, but Lisa Dillman of the Los Angeles Times reports the deal will pay Vatanen $1,250,000 in 2014-15 and $1,275,000 in 2015-16.
Vatanen, 23, had six goals, 21 points, 22 penalty minutes and was plus-9 in 48 games with the Ducks last season. He was tied for fifth in goals among NHL rookie defensemen and was sixth in plus/minus. Vatanen had one assist in five Stanley Cup Playoff games.
Vatanen, Anaheim's fourth-round pick (No. 106) in the 2009 NHL Draft, has eight goals, 23 points, 22 penalty minutes and a plus-12 rating in 56 games.
The native of Jyvaskyla, Finland, won a bronze medal at the 2014 Sochi Olympics, when he led defensemen and ranked second among all players in assists with five.