Meanwhile, Mattiske expects to know by Friday if Gary van Egmond will take up a job in China but has ruled out the coach being able to work for both organisations.
Van Egmond is believed to be the preferred candidate to head up China's national women's youth program.
The 58-year-old, who coaches the Jets women and heads the academy, made a whirlwind trip to China last week to explore the opportunity and met with Mattiske on Tuesday.
"At this point in time, there is not a definite offer," Mattiske said. "Gary has advised us that he will know by the end of the week if there is an offer and whether he is willing to accept it.
"If he was to take the position it is something he would have to focus on solely. He would not be able to continue his roles at the Jets."
Van Egmond was approached last month about the position in China and has since been in talks with the Asian powerhouse.
A coach needs to be in place at the start of the year to prepare the China side in the lead-up to women's under-20 Asian Cup to be held in Uzbekistan in March.

This bloke should be terminated already. Some of his mates are untrustworthy money chasers. He's just looking for his next pay day. Cannot be focused on anything in Newcastle apart from getting his family paid gigs.