Killen signed from Hibernian in 2007 and has so far failed to make an impact in a Hooped Jersey. He did however have an impressive season under Mowbray at the Edinburgh side scoring an impressive 16 goals in 25 appearances with Hibs.
Tony Mowbray remembers the player fondly from their time together at Easter Rd, and feels that the player has something to contribute at Celtic.
"I know Chris Killen can score goals," he said. "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."
There is nothing more positive than having competition for places at a Football Club. Whilst it is counter-intuitive to suggest that Killen will become a first choice striker at the Club, it will certainly keep the pressure on the likes of Scott McDonald and Marc Antoine Fortune to keep the ball hitting the back of the net.
Yours in Celtic
Clydebuilt