Wellington Phoenix players will have every reason to celebrate with the club reportedly set to be granted a 10-year A-League licence extension.

The Wellington Phoenix are set to be granted a 10-year A-League licence extension.

It's understood that the Welnix group, who hold the club's licence, are on the verge of an agreement with Football Federation Australia (FFA) that would see the Phoenix afforded the tenure they're after.

There would be various strings attached, which dictate that the club have to continue meeting various agreed marks. Failure to do so would result in a swift review of their A-League status.

HAGEN HOPKINS/GETTY IMAGES The Phoenix's wait for an A-League licence extension could be over.

But the fact Welnix have secured a 10-year term is a substantial victory on their behalf. The FFA had previously offered them just four years, amid talk that the Phoenix's licence could be transferred to a new Sydney franchise as soon as the end of this season.

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Confirmation of the 10-year extension is said to be imminent. Friday was talked about as the day, with FFA chief executive David Gallop reportedly booked to fly to Wellington to join Welnix chairman Rob Morrison in confirming the news.

But that's been put back a week or two. Not because there are still details being haggled over, but due to all the relevant parties having the required gaps in their schedules to hold a joint press conference.

Gallop, almost, single-handedly prompted the 'Save The Nix' campaign after calling out Welnix and the club back in October. He accused them of trying to "squat" on their licence and indicated the club had next to no future in the league.

"If you want longevity in the competition you need to produce results. That's part of the message that's been sent with the decision to reject the 10-year licence [extension]," Gallop said at the time.

"We've welcomed a dialogue with Welnix...but on any metric they're not performing at a level we would like for the growth of the competition."

Gallop said the Phoenix were competitive on the pitch, but "poor" off it.

"The metrics are pretty obvious: crowds, television ratings and membership. Those are the ones that are really going to make us sit up and take notice."

The Phoenix are averaging crowds of 9110 for their home games this season, while memberships are 4950. The 9110 ranks them ahead of just the Perth Glory and Central Coast Mariners among the 10 teams in the league but continues an upward trend from the 6877 they averaged in the 2012/13 season.

It's not known what specific numbers the FFA and Welnix have agreed upon for the next few years, although it's understood they will be closely monitored and compared against those of the clubs.