Injured Hasan Ali out of Pak's T20I series in Aus
A Pakistan Cricket Board (PCB) official said that after the latest MRI, taken after a rehab period, the doctors had advised Hasan another three to four weeks of rest.
"Hasan has been undergoing rehab at the National Cricket Academy in Lahore but apparently his back problem is taking time to heal," said the official.
Hasan, 25, has been a vital cog of the Pakistan bowling attack, especially in white-ball cricket. He has taken a total of 148 wickets in the three formats.
Hasan played a stellar role in Pakistan winning the 2017 ICC Champions Trophy but in the recent World Cup, he struggled with his bowling form.
Hasan, who has played in 53 ODIs, 30 T20 internationals and nine Tests, is unlikely to be considered for the two Tests in Australia, beginning November 21.