Potts was replaced by Adamson as manager in 1970 after a 12-year spell. Adamson hailed his squad as the "Team of the Seventies", but he was unable to halt the slide as relegation followed in 1970–71. Burnley won the Second Division title in 1972–73, and were invited to play in the 1973 FA Charity Shield as a result, where they emerged as winners against Manchester City. In 1975, the team were victims of one of the great FA Cup shocks of all time when Wimbledon, then in the Southern League, won 1–0 at Turf Moor. Adamson left the club in January 1976, and relegation from the First Division followed later that year. During this period, a drop in home attendances combined with an enlarged debt forced Burnley to sell star players such as Martin Dobson and Leighton James, which caused a rapid decline.