Nicolas Colazo's first-half goal last Thursday was judged offside by referee Jonathan Barreiro, much to City's disgust.

The Argentine received Luke Brattan's through-ball and rounded Eugene Galekovic to slot home, only for the linesman's flag to rule the strike out.

Replays suggested Colazo was almost fully onside, with only his outstretched hand moving beyond the last defender.

"We spoke to the refs and we got an apology for it but that doesn't really help," Valkanis said.

"We lost the game.

"It was a clear goal, we know that and it would have changed the game for sure."

With just a hint of the conspiracy theorist, Valkanis suggested it was convenient to brush the incident aside.

"I find it a little bit amusing and no one ever spoke about it," he said.

"Colazo's goal was 100 per cent a goal and we would have gone in at halftime 2-1 up.

"No one wants to talk about a beautiful goal.

"It would have been a different game against a team that had their backs to the wall."