Pakistan bowling all-rounder Mohammad Nawaz was named on Saturday as the replacement for Noman Ali.
Ali was out of the series against Australia due to appendicitis.
According to the Pakistan Cricket Board (PCB), Nawaz will head to Australia on the first available flight.
Earlier, Noman Ali had complained of sudden and severe abdominal pain yesterday, leading to examinations and scans in emergency that confirmed a diagnosis of acute appendicitis.
He underwent Laparoscopic Appendectomy on the surgeon's advice.
– Zaka Ashraf expected to visit Australia on Dec 24 –
Earlier, it was reported that Pakistan Cricket Board (PCB) management committee chairman Zaka Ashraf is expected to touchdown Australia on Sunday, December 24.
Sources divulged that Ashraf will be accompanied by Chief Operating Officer (COO) Salman Naseer. During his visit to Australia, Ashraf will hold meetings with Cricket Australia officials.
The PCB chief is also expected to witness the Boxing Day Test between Australia and Pakistan, which will begin on December 26 (Tuesday).
The Pat Cummins-led team is taking the lead 1-0 against the visitors.