Martin O'Neill: "He wants to do well and the very fact is that the reaction he got the other evening didn't put him off coming here - that would say something about the lad - and I think he wants to go and prove himself.
"I think he has felt that during the course of his career, that's what he's had to do every single time, try to prove himself. That's probably what has kept him going.
"In the scheme of things, it's how Danny does for the football club that will determine everything else. I have got really no doubts that he will score goals and he will prove a great buy.
"He has got some experience, of course, because he scored goals last season, and I think he wants to prove a point. All those attributes, I find pretty nice.
"Steven Fletcher has come in and he might not have been everyone's choice, as it were, and he's settled down and he has been terrific for us, really terrific.
"We have got a number of people here who have grown up either Middlesbrough fans or Newcastle fans - Lee Cattermole may never have considered himself ever playing for Sunderland at some stage or another. It can happen."