Milne made his first-class cricket debut as an 18 year old for Central Districts in the 2009/10 season against Canterbury.

[1] He has played for the team throughout his professional career, although his appearances have been limited by injuries and by international duties.

[9] In August 2021, Milne was named as injury cover in New Zealand's squad for the 2021 ICC Men's T20 World Cup.

[10] In February 2022, he was bought by the Chennai Super Kings in the auction for the 2022 Indian Premier League tournament but was ruled out after a few matches.

[13] On 5 April 2023, he took his maiden five-wicket haul in international cricket,[14] helping his team win the second T20I by 9 wickets.