Speaking with Sky Sports, Redknapp said: "We all want so much from a forward, from a player. Sometimes we talk about the little finesse and touches he maybe doesn't do as well. But what he is is an animal in front of goal. The mentality he has. He scored four goals and you could see he was furious that he'd come off, he was fuming!
"He wanted to score more goals. A lot of players that I'd play with that were goal scorers would have taken four goals, a standing ovation, take it easy for the game at Fulham next week. This guy is built differently. He's a phenomenon. To have him in our league, I just love watching him.
"All the goals that he scores, he wants more. He knew there was going to be another chance. The one that (Julian) Alvarez scored would have been perfect for him and he knew that. He wants to destroy teams. The guy is just built completely different."