His recent patch of form included a matchwinning performance against Melbourne when he kicked the final two goals of the match to lead the Saints to victory.
“Nasiah’s commitment to the club is a strong vote of confidence in not only the culture we’ve built, but in the future we’re creating both on and off the field,” Saints football manager David Misson said.
“Nas is a well-loved and deeply connected member of our team. His decision to stay is brilliant news for the entire footy club, from the playing group to our loyal supporters.
“He’s an incredibly exciting and talented footballer, and we’re thrilled to watch him continue to develop as an integral part of our club.”
Wanganeen-Milera’s decision to wait before he re-signed has reaped enormous dividends as he was in a strong negotiating position as the Saints were offering big money to attract players from other clubs.