[3] In April 2021, he was signed by Lahore Qalandars to play in the rescheduled matches in the 2021 Pakistan Super League.

[5] In November 2021, he was selected to play for the Colombo Stars following the players' draft for the 2021 Lanka Premier League.

During the first ODI against England, Prasanna scored 25 ball 59 runs, including four huge sixes.

With that Prasanna became the third Sri Lanka player after Sanath Jayasuriya and Thisara Perera to make 2 fifty-plus scores at a strike rate of 200-plus in ODIs.

[12] During the third T20I against South Africa in the decider, Prasanna helped Sri Lanka to win the match and seal the series 2–1 by hitting match-winning 16-ball 37 runs in the last overs with three sixes and three fours.