Shadab, who is playing for the Thunder in the ongoing Big Bash League, hasn't featured in a T20 international since June when he played in the home series against Bangladesh.
The allrounder subsequently underwent shoulder surgery and after rehab, returned to action in the BBL this month.
As part of Pakistan's rotation policy before finalising its squad for the T20 World Cup in February and March, the selectors omitted Babar Azam, Haris Rauf and Shaheen Shah Afridi, who are also playing in the BBL.Â
Pakistan are scheduled to play all their T20 World Cup games in Colombo, with India and Sri Lanka serving as joint hosts of the tournament.
Salman Ali Agha has been retained as captain after leading Pakistan in 34 T20 games this year.
The three-match series in Sri Lanka will be played at Dambulla on January 7, 9 and 11. Pakistan are also scheduled to host Australia for three T20s next month before flying out to Colombo for the T20 World Cup.
Squad: Salman Ali Agha (captain), Abdul Samad, Abrar Ahmad, Faheem Ashraf, Fakhar Zaman, Khawaja Nafay, Mohammad Nawaz, Salman Mirza, Mohammad Wasim, Naseem Shah, Sahibzada Farhan, Saim Ayub, Shadab Khan, Usman Khan, Usman Tariq.
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