Career
A full back, Lydersen played for I.K. Start, until he was signed by English club Arsenal in 1991. However, he was unable to oust first-team regulars Lee Dixon and Nigel Winterburn, and played only 16 games in two years for the Gunners. Lydersen went on loan to his old club I.K. Start during the 1994-1995 season, and the move was made permanent in the summer of 1995.
He went on to play for Sturm Graz in Austria and then onto Molde, before retiring in 1999.