All-rounder Thisara Perera and pacer Nuwan Pradeep have returned to Sri Lanka T20I squad against West Indies after missing the series in India.
There are reports in the Sri Lankan media of an apparent rift in the team under Lasith Malinga's captaincy.
Dickwella has not been granted an NOC since with he was with Sri Lanka's T20 team for the series against New Zealand last week.
Ten players from Sri Lanka's preliminary squad have opted to sit out of the tour of Pakistan due to security concerns.
The two Tests of the tour are scheduled to be held in the UAE later after Sri Lanka Cricket (SLC) turned down PCB's request to hold the games in Pakistan.
The Zouks have announced a number changes to their roster for the upcoming season.
Shell-shocked Sri Lanka kept on losing wickets at regular intervals, with extras the second top-scorer when rain stopped play after 33 overs.
Under Faf du Plessis, South Africa will want to continue with their winning ways to heal the wounds that Test series had inflicted on them.
The Faf du Plessis-led South African side took 2-0 lead in the five-match ODI series.
Perera returned with impressive figures of three for 26 in his seven overs.