Northern Ireland boss ni O'Neill preparing side for visit of Finland . Finland boss ni ##cky was his assistant at derby . they previously met during an entertaining 1 - 3 international friendly in 2009 .
Northern Ireland boss Michael O'Neill preparing side for visit of Finland . Finland boss Mixu Paatelainan was his assistant at Cowdenbeath . Pair previously met during an entertaining 3-3 international friendly in 2012 .