DPMM last competed in Singapore's domestic top-flight in 2009 when, and with the team closing on an S.League title, FIFA imposed a ban on the Football Association of Brunei Darussalam, meaning DPMM's results were expunged with five games left to play. The move opened the way for Singapore Armed Forces to finish first.
With the ban now lifted, DPMM, who won Singapore's 2009 League Cup, will take their place in a revamped S.League which is set to feature 14 teams instead of 12, including Malaysia's Harimau Muda side.
"This is good news for us. We have started preparing (since October) and it is not easy from the start especially with the players having had no games for the past two years," said DPMM FC chief coach Vjeran Simunic who was with the team in 2009.
"We are working very hard and I can say that we are at 75% to the level that we want to reach."
DPMM FC were the first foreign side to lift the Singapore League Cup in 2009 before they Brunei were banned by FIFA for two years.
"We will need to be better than what we were two years ago since the league is getting more competitive with clubs like Etoile FC of France in the fray," added Simunic.
"But every day there is good news because I can see steady improvement. We are hungry for the challenge and I have faith in the players. The local players are not afraid and have all responded well working hard as a team.
"We have had a lot of young players come for tryouts as well and the future of Brunei football definitely looks good."
The S-League is scheduled to kick off on February 9, 2011.