Nils Arne Eggen (born 17 September 1941) is a Norwegian former footballer, manager and teacher from Orkdal. Eggen is closely tied to Rosenborg, the club he managed for 23 years between 1970 and 2010. He is Norway's most successful club manager throughout history, having won the Norwegian top division fifteen times and the Norwegian Football Cup six times as a manager. Eggen`s tactical emphasis is on playing 4-3-3 and attacking football and his way of playing football has frequently been cited as an inspiration among players, coaches and clubs alike, both domestically and abroad. In his native Trøndelag, Eggen is revered and widely regarded as the greatest and most influential sports person in the region, even eclipsing Olympic champions such as Hjalmar Andersen and Petter Northug