Port Adelaide will wear their traditional prison bar guernsey when they play Adelaide twice in the Showdown next season.

The black and white guernsey has been tied to Port Adelaide since their days in the South Australian Football League and has been seen as an important part of the history of the club.

AFL CEO Gillon McLachlan said during an interview on Melbourne radio station 3AW, the Power had come to an agreement with Collingwood on the issue of sharing the black and white colours.

"I'm not sure if it is public, but I can confirm that they will be playing it in their Showdowns for their 150th season," McLachlan said.

"My understanding is the agreement between Collingwood and Port Adelaide is for next year only."

Upon hearing the news, co-captain Ollie Wines was happy for the club.

"It's our roots, it brings us back to Alberton when the club started 150 years ago off the people off the wharves." he said.

No deal has been reported for seasons beyond 2020.