The PSNI's GAA team, which made history at the time of its formation, is predicted to fold with few new players coming through since the end of 50/50 recruitment.
Rule 21, which banned members of the security forces from joining the GAA, was removed in November 2001, two weeks after the changeover from RUC to PSNI.
The formation of PSNI GAC and the fielding of both football and hurling teams was held up as a symbol of the new and reformed police service.
However, the end of 50/50 recruitment in 2011 has seen a steady decline in nationalist recruits and a resulting drop in players joining PSNI GAC which it is said could fold within the next year.
The club's hurling team has not been able to compete in six years due to falling numbers.
In the last year the football team has had to cancel organised games because they couldn't field a full team.
Throughout the 2019 season the football team has played just two games.
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A serving officer who has been a member of the PSNI GAC since its inception said that the club provided a "safe haven and home to many gaels unable to continue playing with their own clubs for various reasons, not least security".
"Like any GAA club, it has given its members lifelong friendships and memories", he said.
The officer, who does not wish to be identified for security reasons, said at its peak the football team had 35-players "most of whom had previously played at a reasonable club level".
The attempted murder of Catholic officer Peadar Heffron in January 2010, the team's then captain, and the murder of Ronan Kerr, from a GAA family, the following year, hit the team hard and the officer said they considered folding up after the attacks with fears for players lives.
"At that time, each member of the club had to decide whether they wished to continue their association, identifying themselves as Irish Catholic police offcers," he said.
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"Defiantly, when the time came for the next football training a few months later we had a massive turn out, not matched before or since.
"We have played twice on the hallowed turf of Croke Park and competed against our colleagues An Garda Síochána, London Metropolitan and NYPD every two years in an international police tournament whilst also playing local club teams in counties Antrim and Down.
"Devastatingly, there has been a slow decline in the club's fortunes in recent years.
"Since the end of 50/50 recruitment the football team has had little to no new blood. Our most recent signings have been open minded colleagues from non-GAA backgrounds willing to give the sport a go.
"They have been brilliant for us and it must be said, very talented footballers.
"With no police o?cers coming from a GAA background or willing to try the sport, our team has grown old. The average age of the team is now mid to late thirties with a core of players that have been together for the last decade.
"We struggle to get games at the best of times as clubs have reservations about playing us and also have their own season ?xtures to contend with.
"This is the first year in memory that we have had to cancel organised games because we cannot field a team, let alone a squad".
The officer also said there had been "aggressive and rude" treatment by civilian staff when attending training.
"I have literally watched a number of them approach my car smiling and friendly, only to become rude and obnoxious, treating me with suspicion as they set eyes on my GAA gear (PSNI GAA gear) as I attend for training.
"However ... you will see a number of civilian soccer teams using the facilities whilst wearing their Glasgow Rangers soccer jerseys without issue".
Earlier this year, then Chief Constable George Hamilton said the number of Catholic PSNI officers - now at 32 per cent - is likely to drop "if nothing changes" and added that both the application rate and success rate of Catholics "falls well below" what it should be.
Speaking to the Irish News, the concerned PSNI officer said: "It is no exaggeration to say that at least 90 per cent of all new recruits placed in my district since the end of 50/50 are from a Protestant and/or unionist background.
"With the lack of Catholic recruits presently, the number of gaels joining the PSNI is non-existent".
He says while other sports receive financial support, players due travel to New York this year for the Police Games have funded the trip themselves at a cost of £1,100 each, subsidised by a small amount of sponsorship from GAA supporting businesses.
"Despite our requests, none of the police institutions have o?ered ?nancial support", the officer said.
"All of these ongoing issues will bring an end to the PSNI GAA club," he added.
A police spokesman said: "PSNI officers are encouraged to join the GAA club, as well as other sports clubs, within the service. The GAA club has seen an increase in support in recent years and continues to play matches against other blue light services and organisations."
