St Kilda are set to launch a four-year deal worth a total of $1.7 million to untried Bombers ruckman Sam Draper, according to Fox Sports' Tom Morris.
The 20-year old has been of interest to the Saints for some time and looms as the club's priority trade target during the off-season despite rupturing his ACL in May.
Draper is believed to be highly rated at Windy Hill and a was strong chance to debut this season had he not been struck down with injury.
The Saints have been courting ruckmen over the last couple of seasons, most recently targeting former Eagle Scott Lycett and veteran Kangaroo Todd Goldstein.
They are believed to have sufficient cap space and are keen to bolster their side in the off-season.
Of their ruck stocks, Billy Longer and Lewis Pierce are out of contract at the end of the season, while in-form big man Rowan Marshall is signed until the end of 2022.
Draper was taken with pick No. 1 in the 2016 Rookie Draft.
