Donald was hired by the Sri Lankan cricket board as a fast bowling consultant ahead of the tournament in England.
"The Sri Lankan attack has what it takes to win the tournament," he told reporters at the cricket board headquarters.
"Sri Lanka has a lot of skills. Lot of leadership with the ball... What is there to be scared of?"
Donald said his was an "inspirational role" and he would be working closely with the squad to assess their individual goals, health condition and personalities.
Donald will work with Sri Lankan pace bowling coaches Chaminda Vaas, Champaka Ramanayake, Ravindra Pushpakumara and Nuwan Zoysa.
Donald was one of Test cricket's top fast bowlers between 1992 and 2002, taking 330 wickets in 72 Tests at an average of 22.25.
Disclaimer: No Business Standard Journalist was involved in creation of this content