A stomach bug continues to affect David Warner but the Australian vice-captain is expected to play in Sunday's one-day international series opener against England.
Warner briefly walked laps at the MCG on Saturday but did not bat in the nets or take part in fielding drills, having fallen ill upon his arrival in Melbourne on Thursday.
Steve Smith later said that while Australia's XI was yet to be settled, Warner should be fine to play.
"I think he's okay," Smith said.
"He was having a bit of a gastro issue yesterday. He turned up here today and I think he walked the oval a few times. He said he'll be fine so I don't think there'll be any trouble there.
"There may be a bit of weather around this afternoon so we haven't quite settled (the XI) but all the guys are ready to go."
Smith confirmed Josh Hazlewood will be rested but was tightlipped on who would replace him from uncapped West Australian quicks Jhye Richardson and Andrew Tye.
With Smith, Warner and Aaron Finch anchoring the top-order, Travis Head is set to bat at No.4.
That is likely to leave Marcus Stoinis, Mitch Marsh and Cameron White to compete for the two remaining spots in a middle order that Smith identified as a key area of focus.
"The middle order's probably where we've had a bit of an issue," Smith said.
"Guys up top have been scoring some big runs ... (but) we need runs out of that middle order and, in particular, wickets in hand to have an onslaught at the back end of the game.
"We've been losing too many wickets in those middle overs and not getting the partnerships together, and it's something we need to work on."
The 34-year-old White's surprise recall to replace the injured Chris Lynn came at the expense of Glenn Maxwell, who has been in hot form in domestic cricket this summer.
Maxwell had a coffee with Smith on Friday after the Australian skipper publicly called on the dynamic allrounder to "train smarter" and focus on substance ahead of flair.
Smith refused to be drawn on their conversation, noting that Maxwell's poor recent ODI record had played a big part in his omission.
"That's between me and Glenn," Smith said.
"I get on really well with Glenn and it was good to catch up and have a chat."