Milera was drafted from Central District in the SANFL, having played 11 senior games for the season, including two finals.

[4] During the year he was diagnosed with Wolff–Parkinson–White syndrome after completing ECG and cardiac tests with the South Australian Under-18 program and underwent heart surgery.

In the 2018 season, Milera was moved to the half-back line as a replacement for the injured Brodie Smith in Adelaide's round 6 victory over Gold Coast.

[2] Prior to his ninth senior season at the Crows, Milera was votes into an extended leadership group at Adelaide alongside three other players.

[8] Just a week away of his 100-game milestone, he was forced to watch the remainder of the season from the sidelines, only returning to training at the end of the year.