PORT ADELAIDE has named Brendon Ah Chee, Aidyn Johnson, Angus Monfries and Dan Houston in its extended squad for Round 20.
The Power has also omitted Matthew Broadbent owing to his ankle aggravation.
Meanwhile the Magpies have named a glut of inclusions to their squad of 23 for their Round 15 game against South Adelaide.
The final team for the Power will be released at 4.30pm on Friday (ACST).
Port Adelaide plays the Crows on Sunday at 4.10pm in Showdown 43.
Fans can see the game live at the Port Club, with drinks specials and footy-themed menus available, as well as a chance to win the door prize of a 10-seater corporate box at the Power v Suns clash.
Port Adelaide Round 20 AFL squad v Adelaide Crows
Sunday 6 August, Adelaide Oval, 4.10pm ACST
Into 25: Ah Chee, Houston, Johnson, Monfries
Out: Broadbent (ankle)
Port Adelaide Round 15 SANFL squad v South Adelaide
Saturday 5 August, Alberton Oval, 2.40pm
Into 23: Austin, Atley, T. Gray Howard, Ladhams, Reynolds, Sharrad, Summerton, R. Young
Out: Hombsch, Pittard, Amon, A. Young, Monfries, Johnson, Ah Chee (AFL)
Port Adelaide Round 15 Reserves squad v South Adelaide
Saturday 5 August, Alberton Oval
Anyang
Baron
Biemans
Cooper
Corcoran
Coxon
Davidson
Finnie
Ginever
Harris
Hawkins
Mahney
Miller
Proude
Roads
Ross
Rudloff
Zavrl