[4] Champness had a successful pre-season in 2017 appearing regularly for the first team, scoring four goals and impressing new coach Ernie Merrick enough to reward him with a three-year deal until 2019/20 although he will still be playing under the scholarship contract for the 2017–18 season.

Champness made his professional debut on 7 October 2017 away to the Central Coast Mariners coming on late and scoring a goal in the 81st minute.

[5] On 14 August 2019, prior to the season after spending most of the pre-season in the United States, Champness decided to quit playing soccer, so that he can follow his music career.

[6] Following his musical career break from football Champness joined Brisbane Roar on loan ahead of the 2020–21 A-League season, angering many in the Newcastle camp over his backing out of the alleged "deal" to return to the Jets.

[10][better source needed] He has represented Australia at youth level, and was a member of the Young Socceroos team in the 2016 AFC U-19 Championship in Bahrain.

His biggest single, "My Plan" was released in February 2020, amassing over 3.5 million combined views over multiple platforms, and placements on the music TV stations BET Jams and VH1 Soul.