McLean made his debut for the
Queensland rugby team in 1973, and quickly progressed to make his
Wallaby debut the following year against the
All Blacks. He made 31 career test appearances between 1974 and 1982. He was a world-class goal kicker and at his prime there was no better tactical kicker in the game. He was also a gifted runner and passer when he took those options although later in his career critics were regularly calling for
Mark Ella's more obvious running game to be brought into the Wallaby side. McLean played mostly at fly-half for the Wallabies but on some occasions was shifted to fullback or centre to make way for fly-half rivals
Tony Melrose,
Ken Wright and
Mark Ella. McLean captained Australia on one occasion, leading the team to a 22–9 win against Fiji in
Suva in 1980. In his 1982 farewell season, McLean reached 1,000 points for Queensland in his 100th and final game. He also scored 21 points against
Scotland in his final Test match, which was the Australian individual record at that time. Brisbane newspaper journalist
Hugh Lunn recorded the following on McLean's career in
The Australian: On the day of McLean's final game for Queensland, the main grandstand at
Ballymore was named the McLean Stand in honour of the contributions from the
McLean family to Queensland rugby and Australian rugby. ==Post-rugby==