Aaron Finch has been cleared to play tomorrow's opening Gillette T20 INTL against Sri Lanka, but paceman Andrew Tye will miss the entire three-game series and the following three matches against Pakistan due to an elbow injury.

Tye will soon visit a specialist for a diagnosis after being hurt at training yesterday.

QUICK SINGLE Continuity key to T20 World Cup hopes: Finch

"It was one of the first handful of throws he did in a high intensity drill which required 100 per cent throwing," Finch said.

"He was just a little bit off balance and I think it was a bit of a side-arm, slinging type throw and (he) just felt a little pop."

A replacement player for Tye will be named in the coming days.

The Aussies have plenty of fast-bowling options to cover the 32-year-old for tomorrow's first match in Adelaide, with Mitchell Starc, Pat Cummins, Billy Stanlake and Kane Richardson all at their disposal.

Andrew Tye running laps at Adelaide Oval while teammates train ahead of tomorrow’s men’s T20 international against Sri Lanka. Appeared to be experiencing pain in right elbow at practice yesterday #AUSv SL pic.twitter.com/xgYaR6Lorp October 25, 2019

Finch had been battling a side strain which kept him out of Victoria's Sheffield Shield and March One-Day Cup games in the past week.

But after batting in the nets and fielding at training today, Finch was cleared to lead Australia in the opening match of the men's international summer.

"I was a bit worried about throwing yesterday," he said.

"It didn't progress all that quickly but ... the last three days it has been really good.

Carey targets T20 World Cup after breakthrough winter

"I have got full movement ... I feel confident to go."

For Finch and his team, Sunday's series opener marks the start of their preparations for the T20 World Cup to be held in Australia from mid-October next year.

The Australians, ranked fifth in the world in T20 cricket, have 21 T20 fixtures between now and then and Finch said the current squad had been picked with the Cup in mind.

"Everyone has talked it to death about the fact that we haven't performed at our best in international T20s, whether it be series or World Cups," Finch said.

"So it's a real focus for us to be able to have the continuity of selection over the next 12 months.

Finch on the mend as Australia tune up for T20I opener

"At times there will no doubt be a little bit of workload management in and around Test matches.

"But to be able to have 21 games with a squad and be playing a lot of three-game series, is really important to be able to get the side all working together.

Australia's T20 series against the Sri Lankans continues on Wednesday in Brisbane and Friday in Melbourne.

The Australians then host Pakistan in a three-match T20 series with games on November 3, November 5 and November 8.

Gillette T20 INTLs v Sri Lanka

Australia squad: Aaron Finch (c), Ashton Agar, Alex Carey, Pat Cummins, Glenn Maxwell, Ben McDermott, Kane Richardson, Steve Smith, Billy Stanlake, Mitchell Starc, Ashton Turner, Andrew Tye, David Warner, Adam Zampa

Sri Lanka squad: Lasith Malinga (c), Kusal Perera, Kusal Mendis, Danushka Gunathilaka, Avishka Fernando, Niroshan Dickwella, Dasun Shanaka, Shehan Jayasuriya, Bhanuka Rajapaksa, Oshada Fernando, Wanindu Hasaranga, Lakshan Sandakan, Nuwan Pradeep, Lahiru Kumara, Isuru Udana, Kasun Rajitha

October 27: First T20I, Adelaide Oval, 2pm (Fox & Kayo)

October 30: Second T20I, Gabba, 6.10pm (Fox & Kayo)

November 1: Third T20I, MCG, 7.10pm (Fox & Kayo)

Gillette T20 INTLs v Pakistan

Pakistan squad: Babar Azam (c), Asif Ali, Fakhar Zaman, Haris Sohail, Iftikhar Ahmed, Imad Wasim, Imam-ul-Haq, Khushdil Shah, Mohammad Amir, Mohammad Hasnain, Mohammad Irfan, Mohammad Rizwan (wk), Musa Khan, Shadab Khan, Usman Qadir.

November 3: First T20I, SCG, 2.30pm (Fox & Kayo)

November 5: Second T20I, Manuka Oval, 7.10pm (Fox & Kayo)

November 8: Third T20I, Perth Stadium, 4.30pm (Fox & Kayo)