Ngumoha scored a goal in Liverpool's friendly match against Yokohama F Marinos on Wednesday, showcasing his skills and potential.
"Rio again demonstrated his quality," said Slot. "It's great for us to see new players from the academy making an impact. It brings energy to the team and gives us hope for the future."
Slot also acknowledged that Ngumoha has room for improvement, citing a particular instance where he could have passed the ball to Curtis Jones. However, he praised Ngumoha's ability to make a positive impact on the game at such a young age.