And the Reds boss is looking forward to seeing how a player he believes possesses rare finishing skills continues to improve in the coming years at Anfield.
The Wales international, who flourished during a short-term loan stay with Hull City last season, put pen to paper on fresh terms with Liverpool on Tuesday afternoon.
Asked about the news ahead of a friendly meeting with Tranmere Rovers, Klopp told Liverpoolfc.com: "Harry's development in the last few years is really exceptional so of course we had to keep the boy!
"Now we see what we do with that, but it's really good that his long-term future is, for sure, at Liverpool.
"He's a finisher, which is the most difficult thing to learn, he has the nose for a goal if you want.
"[It's] good news."