“Dave is fine, he will play tomorrow. No doubt about that,” Finch told a news conference on Friday.
But Australia are still pondering over their final selection for the game at Bristol.
“In terms of the 11, we will name it at the toss. Everyone is in the mix. We are very close to an 11, but we are not going to name it yet.
“Everyone’s been in really good form… in the practice games, and the three games we played against New Zealand,” the captain added, leaving questions about who bats at No.3 – either Usman Khawaja or Shaun Marsh.
Warner underwent a fitness test on Thursday (May 30) after concerns that an upper leg injury might rule him out of Saturday’s game. The 32-year-old missed the defending champions’ final warm-up match against Sri Lanka on Monday and was unable to train on Wednesday.
Warner, who scored 345 runs at an average of 49.28 in Australia’s run to the title four years ago, returned to the national set-up last month after serving a one-year ban for his part in a ball-tampering scandal in South Africa.
Finch said both Warner and Steve Smith, who was also suspended after the scandal and stripped of the captaincy, had slotted back into the team easily.
“When you are world-class players, you adapt again really quickly and you get up to speed.
“Having them play 13 games each in the IPL (Indian Premier League) is really important. It is a high standard of cricket so that gets you back up to as close to international competition as you can.
“I think Steve will be one of the all-time greats by the time he will have finished the game. There is no question about his batting ability. So, when you are great, you get the game quicker, things just happen quicker, so there is never any issue about how he’ll bounce back.
“The same with Davey. They are both so competitive. They have both got great records. So, there was never any doubt about how well they would come back.”
(Production: Kurt Michael Hall)