Port Adelaide delists Willits whose slow development has seen him overtaken by the likes of other players at the Power such as Justin Westhoff and Alipate Carlile.

"Ryan hasn't shown much improvement in the past few years so we want to give ourselves an opportunity to pick someone better," Power coach Mark Williams said .

"You can only put so much time and effort into them. He really hasn't succeeded so we are happy to give someone else an opportunity."