 On 21 December 2015, Chonburi has promoted Therdsak from player-coach to be the new manager of the club after the departure of Jadet Meelarp.Therdsak made the official managerial debut on 2 February 2016 in AFC Champions League Preliminary Round 2 against Myanmar champion, Yangon United at Chonburi Stadium.Chonburi won 3–2 at the extra time.