The Mariners frontman has been tipped by some to have a chance of making Pim Verbeek's squad for the World cup next year.

But the player himself said competing at the World Cup is "not even in the back of my mind."

"It's too far off to be thinking about it," said twice-capped Simon. "Every kid dreams of playing in a World Cup, it's nice to have my name mentioned."

Simon's main focus is adding to his goalscoring tally when the Mariners battle Brisbane Roar in round four of the A-League at Suncorp Stadium on Saturday.

He said he was reasonably happy with his form so far this year after netting in the club's shock round one win over Melbourne.

Simon, who came into the season with a knee injury, then had a fair goal disallowed in a round two draw against Newcastle.

He was not as dangerous in last week's scoreless draw against Sydney but is itching for a crack at Roar's under pressure defence.

"At home they're under pressure so they'll be pumped up," Simon said. "We'll have to be ready."

Meanwhile, Mariners coach Lawrie McKinna said defender Nigel Boogaard is likely to play against Roar despite battling a slight calf injury this week.

Central defender Chris Doig, who has not played since round one, is still out.