Terry Milera's 30-game career as a Saint appears over after he informed the club of his desire to return to South Australia.
Milera, 26, cited personal reasons for his request to move back to his home state.
"We are sorry that Terry is likely to move on from the Saints at the end of the season but we fully appreciate the personal reasons contributing to his decision," St Kilda head of football Chris Pelchen said.
"Terry has shown that he is a player of some ability and we will endeavour to seek a satisfactory trade for the mutual benefit of both him and the club."