The 28-year-old missed the two-Test series, which Sri Lanka won, and was out of the first four one-day internationals. The fifth and final ODI is on Sunday, but Chandimal was not included in the squad for that match.
But he was included in the T20 squad and will play in the day-night game on Tuesday.
Chandimal was banned by the International Cricket Council along with coach Chandika Hathurusingha and manager Asanka Gurusinha for refusing to take to the field for two hours during the second Test against the West Indies in June. It was shortly after Chandimal was accused of tampering with the ball.
The Sri Lanka captain was subsequently banned from the third Test against the West Indies and given a fine equal to his match fees. He was later banned for another two Tests and four ODIs after pleading guilty to violating the spirit of the game.
Sri Lanka T20 squad: Angelo Mathews (captain), Dasun Shanaka, Kusal Perera, Dhananjaya de Silva, Upul Tharanga, Kusal Mendis, Thisara Perera, Shehan Jayasuriya, Shehan Madushanka, Lahiru Kumara, Dinesh Chandimal, Akila Dananjaya, Jeffrey Vandersay, Lakshan Sandakan, and Binura Fernando.
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