PORT Adelaide rookie Cameron Hewett will be retained for a fourth season on the Power's list.
The 21-year-old will be delisted by the Power, but the club has committed to relisting him at next month's NAB AFL Rookie Draft.
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Under AFL rules, a player can only be on a rookie list for a maximum of three years before they must be either delisted or upgraded to the senior list.
Hewett is yet to make his AFL debut for the Power after being taken in the 2016 rookie draft at pick 28.
He has played 43 SANFL games for Port including 12 in 2018, when he averaged 19.4 disposals and five marks.
"Cam is a talented footballer and we have seen glimpses of what he can do in the SANFL," the Power's general manager of football Chris Davies.
"The challenge for him is to get his body right and take his game up a level in 2019, and we are willing to offer him that opportunity."
As reported by AFL.com.au last week, the Power re-signed Jack Trengove, Trent McKenzie and rookie-listed ruckman Peter Ladhams to one-year extensions for 2019.
