The Belgian striker, who has scored 10 goals this season, has been in negotiations with the New Zealand outfit regarding an extension on the current deal which expires at season's end.
Huysegems' Melbourne-based agent Dragan Jetvic told SBS that the former Lierse SK, AZ Alkmaar, Feyenoord, FC Twente and RacingGenk forward was looking likely to be on his way from Wellington when the 2013/14 campaign wraps up.
"It would be a shame to see Stein go because his performances and goalscoring prowess have helped lift the level of the competition this season," he said.
"He has 16 caps for his country and offers a degree of pedigree which has been there for all to see.
"But, in terms of negotiations, it's not looking too promising at the moment."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball