The 18-year-old had started the last three Premier League games for Klopp's side, but suffered what will be a long-term ankle problem in the 3-0 win over Leeds United last Sunday.
"We try to improve and we really try to develop and for that, the door is very open for everybody to be part of that," Klopp said.
"So far it worked out really well and with Harvey, it was nice to see how naturally he did that.
"A young player like him, you don't fiddle with 5,000 pieces of information.
"You just let him play and have a look. OK [you see] what is natural and where does he need advice?
"He didn't need a lot of advice, it was really nice to see and that is why he played.
"He had a full pre-season, did all the sessions and that is why he played.
"Now Hendo played the position and Naby came in on the other side and played a super game offensively, really dominant, and all that stuff. So it is nice to see that we can do that.
"The engine room of a football team is in the middle and we have only three positions and not five or whatever.
"That means they have to be fit and really in charge of the game as much as they can and that is why we decide from time to time we decide this or that."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!