The on-loan midfielder made his debut for the promotion-chasing Bluebirds in their goalless draw with Sheffield Wednesday on Saturday.
“We miss him already in the training group because he developed really in a fantastic way," Klopp told Liverpoolfc.com.
"But because of the quality we have in the squad, it happened really often that he was not even in the squad. That's not nice and he needs these 20 games in the Championship. I'm really happy for him.
“It's a difficult league as we all know. They are in a good position and maybe they will have play-off games, which would be a fantastic experience, so it's a very good decision."