Craig Bellamy completed his loan move to Celtic just hours before the end of the transfer deadline.
Wales striker Bellamy, 25, was has been told that he will not play for Newcastle again under manager Graeme Souness, earlier turn ed down a permanent move to Birmingham City.
“I want to win every game I play. I’m one of the first people out to training every day … I know a lot of people question my attitude but if that’s a bad attitude I’m in the wrong game.”
Celtic manager Martin O’Neill added: “From last season, when we lost the likes of Henrik Larsson, when you want to go and play football against AC Milan, Barcelona and the like, we want to come prepared.
“And the one thing I don’t think whatever things are going to be questioned about Craig Bellamy, to be honest, ability is not one of them.”