Millwall face Spurs at White Hart Lane in the FA Cup.
“He worked really hard on his game," Craig recalled to the London Evening Standard.
“He always did extra after training on things like shooting. He always did his gym work and he listened because he wanted to learn.
“He would pull the coaches aside and see where he could improve. We had a lot of experienced pros at that time and if anyone said anything to him, he would take it on the chin.
“He was very level-headed and his work-rate was second to none. It is paying dividends for him now. What he has achieved is brilliant — and if people like that get success, then brilliant."