"The rest have been replaced by new players who are mostly under the age of 21.
"These changes are part of our long-term plan to keep the team competitive.
"With this combination of players, we hope to remain contenders for at least another two or three years."
Chun Yong added that the new-look teams will undergo training camps and a series of friendly matches against clubs in Thailand in the coming weeks as part of their preparation for the league.
Meanwhile, PKNS president Noor Hisham Mohd Ghouth said the club will have to show great character if they are to once again emerge champions.
"We expect it to be a much tougher competition this year as every team in the league have strengthened their squads in both the men's and women's categories," said Noor Hisham.
"We will have to find a way to overcome these challenges if we want to hang on to our titles."
PKNS, who received RM100,000 worth of sponsorship from Figos recently, took the men's title after they thrashed MPSJ FC 7-2 in the final last year while their women edged Selangor 1-0 in the decider.
*Sumber Dari New Straits Time