Ken Ilso scored 46 goals in 54 appearances for the S.League outfit.
Sarawut Masuk's 89th minute header helped Thailand to beat Singapore 1-0 in Suzuki Cup.
Myanmar face Cambodia in Group B encounter on Wednesday.
Malaysia take on Group B giants Vietnam on Wednesday.
Singapore settled for a goalless draw against the host nation, while Thailand sealed a 4-2 win over Indonesia.
Philippines drew their opening encounter against Singapore.
Singapore will meet Thailand in their second group game on Tuesday.
Singapore are yet to face Thaialand and Indonesia in the group stages.
Here is the points table for 2016 AFF Suzuki Cup.
Singapore will be up against in-form Thailand on Tuesday.
Middlesbrough will look to continue their three match unbeaten run on Sunday.
Myanmar have a young squad with average age of players being 22.
Malaysia will look to snatch three points on Sunday.
Southampton face Liverpool in the Premier League clash on Saturday.
Crystal Palace face Manchester City in the Premier League clash on Saturday.