Kjell Inge Røkke stadium, which got the nickname "Røkkeløkka" (English: "The Røkke Park"). Some estimates suggest that he has spent about NOK 400 million funding the club. Røkke, along with his business partner Bjørn Rune Gjelsten, also bought into Wimbledon Football Club in the late 1990s, becoming a joint owner of the team in 2000. The following year, with the side homeless since leaving their Plough Lane ground in 1991 and playing at Crystal Palace's Selhurst Park stadium in Croydon, southeast London, Røkke and Gjelsten, along with chairman Charles Koppel and businessman Pete Winkelman agreed to relocate the team from London to Milton
South London derby its safety was criticised by league officials. The club began a groundshare with Crystal Palace at Selhurst Park, which lasted for six years until 1991. After another year groundsharing at West Ham United's Upton Park, Charlton moved back into The Valley in 1992. Wimbledon groundshared at Selhurst Park from 1991 until their relocation to Milton Keynes in 2003. The campaign of Wimbledon's fans against the relocation led to the formation of AFC Wimbledon. The teams first met in 1921, with Charlton winning at The Den 1–0. They won the return fixture at The Valley 2–1, completing the first league double