The Predators announced the $1.5 million deal for the forward Monday.
Salomaki, 25, played 58 games last season for the Predators with two goals and six assists. He ranked fourth on the team with 114 hits last season and blocked a career-high 35 shots. The 5-foot-11, 203-pound Salomaki also has the fourth-most hits for the Predators since 2015-16 with 299.
The 52nd selection overall in the 2011 draft, the native of Raahe, Finland, has played 125 games since making his NHL debut Jan. 8, 2015.