Luke Valente retries after injuries prevented him from making his AFL debut.
"Unfortunately, I have come to the realisation that physically I am unable to make the progress required to play at the elite level," Valente said.
"It was an incredibly difficult decision to make but after a long period of reflection, including discussions with the club, my family, friends and management, I believe that, in terms of my long-term health and well-being, it is the right thing to do."