Theekshana claimed eight wickets in five matches to lend support to a youthful bowling attack alongside pacer Matheesha Pathirana and fellow spinner Dunith Wellalage.

Top order batsman Sahan Arachchige will join the squad while Theekshana undergoes rehabilitation, Sri Lanka Cricket said.

Sri Lanka, who cohosted the tournament with Pakistan, came in as underdogs but have made their 11th Asia Cup final and a have chance to clinch their seventh title.

The island nation snuck into the Super Fours with a dramatic win over Afghanistan and have kept up their momentum despite losing to India in the Super Fours.

"The boys really want to deliver for the country," said Shanaka.

"As a team, we have been underdogs, so everyone wants to perform on the bigger stage. These youngsters, they need to show the world what they are capable of."