"Andy is a young and inexperienced lad with a lot of pressure on him but he will come good," said the former Newcastle and Blackburn striker.
"Yes, there will be times when people question him but he's at the right club. At Anfield, he's got a great manager who understands the trials and tribulations of being a young footballer.
"When I moved to Blackburn, I had great guidance there and that was Kenny. Kenny will protect him and look after him as he did me at Blackburn. He did that in a fantastic way.
"Once he settles down, starts to play well and score, you will see the fearsome centre forward that we saw at Newcastle and you'll see the reason why Kenny paid £35million for him.
"Andy is talented. He is a nightmare for defenders to play against if given the right service and if he is fit enough."