Hill helped United reach the 1976 FA Cup Final, scoring both goals with typical long-range efforts in the semi-final at Hillsborough Stadium against Derby County. Unfortunately for Hill, United lost in the Final against Southampton. He was also part of the 1977 FA Cup-winning side. Hill left United for Derby County for £250,000 in 1978, with his sale by Dave Sexton deeply unpopular with supporters. At the time of his sale, Hill was United's top scorer and a favourite among fans. He spent two seasons with Derby County, most of it sidelined with a knee injury suffered in one of his first games, before moving to Queens Park Rangers in 1980. He left England for the Montreal Manic of the NASL in 1981. After a successful first season with the Manic, he began the 1982 season in Montreal, but after five games the Manic sent him to the Chicago Sting. In the fall of 1982, the Sting entered the Major Indoor Soccer League for the winter indoor season. Hill began the season with the Sting, and moved to the San Jose Earthquakes after eleven games. In January 1983, the Earthquakes turned around and traded Hill and Gary Etherington to the New York Arrows in exchange for Steve Zungul. In the summer of 1983, Hill played for Inter-Montreal of the Canadian Professional Soccer League. In the autumn of 1983, Hill signed with the Kansas City Comets of MISL. He played one season with the Comets, then began the 1984–85 season before being released. In December 1984, he signed with the Tacoma Stars.