Despite scoring a brace in Celtic's 3-0 win over Brisbane Roar on Sunday, Chris Killen knows he will have to continuing performing to a high level if he is to play regular first team football. "Being at such a big club, there is competition for places all around the field," he said.

"We've got four good strikers at the club and there are plenty more coming through.

"You've got to keep on your toes, work hard and keep your head down."

New Hoops boss Tony Mowbray sees no reason why Killen cannot enjoy a successful future at Parkhead.

"I know Chris Killen can score goals," said Mowbray.

"He's physically very, very strong and a team player. If he carries on in the same vein as he did today, will he have a future? Yes.

"Everyone has got an opportunity, the strikers ultimately get judged by the goals they score and their general team play and I think Chris is good at all of those things.

"He knows he's got a fight on his hands to get the minutes on the pitch to be able to do the damage. He's a good lad and a good professional.

"The best teams have competition for places and Chris Killen will hopefully intensify that competition for our club."