The club confirmed on Monday that Ward will have to go through the final stages of concussion protocols in order to be cleared to play, while Whitfield has been managing an ankle injury for some time, but is expected to put his hand up for selection if he is able to train on Friday.
Tim Taranto is also managing ongoing back issues but could look to return as soon as next week after previously missing the last two rounds.
The club have also confirmed that Bobby Hill underwent successful surgery after being diagnosed with testicular cancer, but will remain sidelined indefinitely while he undergoes further assessment.
In terms of outs, midfielder Jacob Hopper will meet with a knee specialist in the coming days to determine whether he can return to training any time soon.
Young defender Leek Aleer will also miss four to five weeks with a calf injury after a recent setback sustained in the VFL.
The Giants will travel to Marvel Stadium on Sunday to face the Kangaroos, with the match scheduled to commence at 3:20pm (AEST).