Griffiths, who turns 35 in August, did enough in a three-month stint last season to convince new boss Stubbins to lean on his experience and know-how in 2014-2015 as the Jets seek to end a five-season finals shutout.
While the much-travelled Griffiths is keen to continue mentoring the likes of Golden Boot Adam Taggart, he insisted he will be bidding to do a lot more than simply "making up the numbers" at Hunter Stadium.
With Griffiths expected to put to paper on Monday, he insists he is a more complete player than the one who won a championship with the Jets and took out the Golden Boot and Johnny Warren medal in 2008.
Limited to eight appearances – and three goals - for the Jets in his second coming due to well documented disciplinary issues, he has set no time limit on his A-League longevity.
'I basically plan to play every game as if it’s my last," he explained. 'I still have a lot of things to prove to a lot of people and I am not re-signing just to make up the numbers.
'It’s about getting myself and my body in the best possible shape, hopefully the best shape of my career and really give it a crack. And hopefully I will achieve something.
'There are not too many older players in the competition and my body feels good. Without the right genes you are pretty much stuffed and I have been lucky in that area with my dad playing till he was around 50.
'I’ve had no major injuries but I’m not setting too many goals, other than to get through the pre-season and if I can do that then everything else will fall into place in terms of how I play.
'When I play badly, it’s when I am unfit. When I have that match fitness my game tends to go to another level," added Griffiths who spent five seasons in the Chinese Super League as well as a short spell with Sydney FC.
With the Jets falling short again last season in the final push for the play-offs, Griffiths said: 'We have to do a little bit more recruiting in certain positions.
'We have a good squad but we are two or three players of quality. People go on about us not making the top six in recent years, I think we need to forget about even thinking about that and just be competitive on a match-to-march basis.
'The whole mentality of the club needs to be that we are capable of beating anyone at any given time."
Griffiths is hoping that fellow late-season recruit David Carney also re-signs, explaining: 'I just think he’d be a really good asset to have once he’s really fit. The boss has obviously got his work cut out here.
'I’ve already had a good chat with him and he outlined what he expected of me and what sort philosophy he will adhere to.
'He has all the respect and I will play wherever he wants. He comes with a fresh mindset and he’s in charge of a young team that with the right mentoring can do well."
While he doesn’t make the long sprints of his heyday, Griffiths still possesses a burst of acceleration which can damage teams.
'Overall I think I’m a better player than when I won the championship here at Newcastle," he said. "I have lost a yard of pace but I am sharper over five yards.
'But when it comes to 20 or 30 yards then it’s a different matter and I am lot slower. I am wiser and smarter though."