He is, unlike the other two free agents, Calle Rosén and Andreas Borgman, a formerly drafted player. He was taken in the sixth round in 2013 by the Anaheim Ducks, and NHL Central Scouting had him ranked that year right in with Andreas Johnsson and Andreas Borgman in the 33 to 40 range, which is not where you usually find NHL players. He was an overager at the time — 20, to their 18.
He did not even so much as join the Ducks on an ATO in the minors, and he passed out of their control as he stayed in Finland and then spent one year in the KHL.