The trial eventually resulted in a two-year contract with the club, and Rygaard was placed on the Charlton U18 team for his first season. During his time in Charlton, Rygaard played two friendly matches for the first team under head coach Alan Pardew. Return to Denmark On 30 January 2009, after one and a half season in Charlton, Rygaard returned to Herfølge, despite having an offer to play for Sparta Prague. On 3 December 2009, Rygaard was notified by general manager, Per Rud, and head coach, Auri, that his contract, running to July 2010, would not be extended and that they would listen to offers from other clubs during the winter transfer window. After failing to find a new club, he left the club by mutual agreement in March 2010.
The trial eventually resulted in a two-year contract with the club, and Rygaard was placed on the Charlton U18 team for his first season. During his time in Charlton, Rygaard played two friendly matches for the first team under head coach Alan Pardew. Return to Denmark On 30 January 2009, after one and a half season in Charlton, Rygaard returned to Herfølge, despite having an offer to play for Sparta Prague. On 3 December 2009, Rygaard was notified by general manager, Per Rud, and head coach, Auri, that his contract, running to July 2010, would not be extended and that they would listen to offers from other clubs during the winter transfer window. After failing to find a new club, Non-Binary left the club by mutual agreement in March 2010.

