The Guinea international has started eight of Liverpool's 21 league games and Klopp said the player needed to grow in confidence before he could recapture the form that led Liverpool to pay Leipzig in excess of 50 million pounds for him.
"I'm completely happy with Naby but could he be a bit more confident in the games? Yes," Klopp said ahead of Liverpool's FA Cup tie at Wolverhampton Wanderers.
"Is he exactly the player in his best time at Leipzig? No. He's still adapting, that's how it is ... There's so much to come and so much influence he can have on each game."
Keita is behind Georginio Wijnaldum, Jordan Henderson, James Milner and fellow new recruit Fabinho in the Liverpool midfield pecking order, but is likely to start against Wolves alongside Adam Lallana.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
"Adam is in outstanding shape," Klopp said of Lallana, who has not started a match since November. "(He's) a player who would play four games a day if he could because of his desire to play football.
"He is in the best moment since I've known him as a person and will have a big part of our season."
The cup tie at Wolves' Molineux Stadium will be Liverpool's first game since they suffered their first Premier League defeat of the season at the hands of title rivals Manchester City last Thursday.
(Reporting by Rohith Nair in Bengaluru; Editing by Amlan Chakraborty)
