Aleer made his AFL debut for the Giants in round 20 of the
2022 AFL season, against the
Swans. During the
2024 AFL season, expressed their interest in luring Aleer to
Melbourne, Victoria in a trade. It wasn't until the
2025 trade period that Aleer made a trade request to the Saints. His trade value had increased throughout the
2025 season as the defender managed a career-best 13 appearances at AFL level. However, the highly-publicised move ultimately fell through as St Kilda withdrew from trade discussions, and he recommitted to the Giants for a further two years. In
2026, Aleer found himself in a new role which provided him a regular spot in the senior team. He played as a ruck hybrid player, being able to swing forward and kick goals when needed. He kicked his first career goal in the
Sydney Derby against the Swans. ==Statistics==