1990–91 Wimbledon F.C. season 1990–91 Wimbledon F.C. season During the 1990–91 English football season, Wimbledon F.C. competed in the Football League First Division. In the 1990-91 season under Harford's first full campaign in charge, Warren Barton was purchased for £300,000 whilst in the league, Wimbledon had another strong season, finishing in 7th place. Nothing came of the plans for a new ground and at the end of the season, Wimbledon's board decided that Plough Lane was beyond redevelopment to meet the new FA rule requiring all-seater stadiums. Consequently, the club moved to Selhurst Park before the start of next season, ground-sharing with Crystal Palace.
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