He led Dundee United to their only Scottish Football League title in 1982–83, following Scottish League Cup wins in 1979 and 1980. Under McLean, the club also lost in a further eight domestic cup finals. In European football, McLean's Dundee United reached the European Cup semi-finals in 1984 and the UEFA Cup final in 1987. He became a Dundee United director in 1984 and served as chairman between 1988 and 2000, when he resigned after assaulting a reporter. His involvement with the club finally ended in 2002 when he sold his majority shareholding.