The sport's governing body said in a statement that Senanayake had worked with some experts in University of Western Australia and had made "tremendous improvement" and continues training with his coaches.
In the meantime Sri Lanka Cricket will allow him to play in the local mercantile cricket tournament starting next month as per International Cricket Council guidelines, a significant step for the bowler to return to the game.
The ICC guidelines say a suspended bowler could play domestic cricket with the permission and supervision of the home board.
Before the suspension Senanayake had played 37 one-day internationals for Sri Lanka and captured 40 wickets. In 17 Twenty20 internationals he took 18 wickets.
