Liam Reidy officially makes the move from the Dockers to the Blues during the 2025 Trade Period.
Reidy will cross to the Blues along with Picks 53 and 71, while the Dockers will receive Picks 50 and 68 in return.
Reidy has played just three senior games since being drafted in the 2022 Rookie Draft, having been stuck at the Dockers behind Luke Jackson and Sean Darcy.
"We see a lot of promise in Liam," Blues list boss Nick Austin said.
"His form in the WAFL in recent years has really caught our eye, with his athleticism and ability to cover the ground a standout. We see him being a significant addition to our ruck group."