When Matsunaga was a player for
Matsushita Electric (later
Gamba Osaka), he became a coach at the club in 1989. He coached for the club until 1994. In 1997, Matsunaga signed with
Verdy Kawasaki and in 1999 he became a manager. From 2003, he managed
Ventforet Kofu (2003-2004),
Vissel Kobe (2005),
Sagawa Printing (2006) and
FC Gifu (2007-2009). ==Managerial statistics==