"I said to him at half-time he had to tell us (if he was feeling it) because we didn't want to push him too far. But it was nice to get as much as we got from him."
But the former Preston boss could not hide his satisfaction at the former Celtic player's match-winning display.
"He is what he is. He's an international striker and he's scored goals at every level.
"He has the ability and the pace we need. We identified plenty of other players and we are disappointed we haven't got one or two more but that is for very different reasons.
"I'm certainly delighted to have Kenny."