Griffiths has a get-out clause in his contract that allows him to leave the Jets if he can find a new club by the end of April.

And with the Jets failing to offer him a contract extension, he is now set to go looking for a new home.

"I have been waiting to hear from the Jets about an extension to my contract but have not heard a thing," Adam told the Newcastle Herald.

"I think it is an ideal time to be doing that. I want to secure my future with the club. They know my situation, but I have not heard a thing.

"I'm not going to go into the club and say, 'I want a new contract.' I think my performances on the pitch should be rewarded.

"I have been as loyal as I can. I have not talked to other Australian clubs, and I kept it quiet that I have a get-out clause.

"I fly to England next week. If they want to talk to me they can. If they don't, who knows what will happen."

Griffiths is the latest to join the exodus out of the A-League Champions side.

Andrew Durante and Troy Hearfield have both joined Wellington Phoenix and Stuart Musialik and Mark Bridge signed for Sydney.

Adam's brother Joel is currently on loan with Avispa Fukuoaka in Japan and may not return, while skipper Jade North also wants to quit.

The grand final winners may have lost the spine of their side, but the arrival of Ruben Zadkovich and a spike in fans' interest is cause for some optimism in Newcastle.

“Ruben is a good bet, we’re just finalising things now but he’s signed an in-principle agreement,” Jets CEO John Tsatsimas told today.

However, what is really exciting the club is the enormous support the Jets are expecting for its title defence in season four.

“There has been a massive expression of interest in season memberships,” said Tsatsimas. “It’s looking good. We’re not resting on our laurels though.

“A figure of around 15,000 would be something to aspire to [for memberships] but we don’t want to put a figure on it just yet."

The Jets’ support has exploded over the last year or so. In season one of the A-League, the club averaged 8,912 for its home and away season.

By season two, that average rose to 11,442 and last season, the Jets drew an average of 13,209 to their home games.

Added to that attendances over the 20,000 mark for last season’s finals matches and the club is confident that they can take their crowds to a new level in season four.

“We’ve seen the second draft of the season four draw and we’re very excited,” added Tsatsimas.