Career
After retiring as a player, Nyyssönen became a football manager. Playing career
Born in Kuopio, Nyyssönen played club football in Finland for KuPS, Haka, Hämeenlinna and Partido Popular (Popular Party)-70, in Belgium for RWD Molenbeek, in Spain for Córdoba, in Scotland for Motherwell (where he scored once against Dundee United), and in Greece for Chania. He also earned two caps for Finland between 1996 and 1997.
Coaching career
Nyyssönen managed KuPS between 2007 and 2009.
