Western Sydney Wanderers coach Tony Popovic says fans who decide to throw flares are not welcome.

Popovic has a clear message for those fans who think it acceptable to exhibit the type of behaviour that was seen at Etihad Stadium on Saturday night, which resulted in the club copping a $5000 fine and a suspended three point penalty.

“If people want to throw flares, it's illegal, they shouldn't come to the game,” Popovic said.

“We want [the fans] to keep supporting us with a passion but to understand flares are illegal and not allowed.”

The former Socceroo said the club was disappointed with the sanctions, but stressed the importance of their fans and exemplary behaviour that the majority of them display.

“We're disappointed with the sanction but it's one we have to accept,” he said.

“We have a special bond with our fans... what we've built is phenomenal and it's been fantastic for the league.

“I'm a very proud head coach of this football club. That won't change. Our bond won't change.

“With our fans, that'll only get stronger.

“If they want to support our team with a passion that we've seen, home and away, please come because, we love seeing you there.

“And I certainly love seeing them from the sidelines.”

The Wanderers face Wellington at Pirtek Stadium on Sunday at 5pm.