Essendon legend Tim Watson believes Collingwood may consider making a change to its defence for the Grand Final.

The man in the gun according to Watson is defender Tyson Goldsack who was soundly beaten by Jack Riewoldt in Friday's preliminary final, conceding five goals.

Speaking on SEN, Watson said Collingwood will have to weigh up whether they feel he can take on either Josh Kennedy or Jack Darling of the Eagles.

"I think it’s going to be the biggest selection question that’s raised everywhere this week, whether they can afford to play Goldsack against either Josh Kennedy or Jack Darling," Watson said.

"He played on Kennedy three weeks ago and Kennedy was still a little bit underdone. He’s now almost back to his best and he’s as sharp as he’s ever been.

"Goldsack in my mind has never been a key defender ever in his career, he’s been a good third man up.

"Do you at this point knowing that Darcy Moore is fit to play, Ben Reid is fit to play, would you consider making that move this weekend?"

Former Melbourne captain Garry Lyon said he doesn't feel the Pies will make a change to the team that knocked off reigning premiers Richmond convincingly last Friday.

"I think it’s something they’ll absolutely throw around and in the end I think they’ll come up with no change," Lyon said.

"What they’ll say is, okay, Kennedy might get a hold of Goldsack, but Riewoldt kicked five goals and we won by 30 points.

"I think that’s the attitude they’ll take. Jack Riewoldt was absolutely superb."