Hannebery was a standout junior footballer and represented the Oakleigh Chargers in the TAC Cup, as well as playing for Vic Metro at the 2008 Under 18 National Championships.

[5] Hannebery's outstanding season was further rewarded with finishing 10th in the Bob Skilton Medal and winning the club's Rising Star Award.

He was rewarded with the AFLCA Champion Player of the Year Award, polling one vote ahead of Nat Fyfe.

[11] After persistent hamstring and calf issues prevented him from making his St Kilda debut until round 14 of the 2019 season,[12][13] Hannebery was among his side's best in his first game for the club, a 56-point loss to the Brisbane Lions at Marvel Stadium.

[14] His best game for the year came in the round 23 loss to his former side Sydney at the SCG, when he accumulated 28 disposals to be best afield for St Kilda.

[15] In October, Hannebery broke his foot when he rolled his ankle on a step at his sister's fiancé's house in Perth,[16] and required surgery.

He finally returned to the Saints in Round 22, playing a conservative 59% game time but impressing with 18 disposals a nd eight contested possessions.

At the conclusion of the season, Hannebery and the Saints renegotiated the final year of his contract, entering 2022 on reduced salary.

[25] St Kilda's last game of the year would so happen to be against Hannebery's old side Sydney, and he would go on to finish his professional career playing against the team he started at.