Ngumoha, who turns 17 later this week, shone in pre-season to get fans wondering if he could be part of the first team this year.

The second-youngest Liverpool player in a competitive game ever started a pre-season friendly against Athletic Bilbao on the left wing – and he caught the eye as he has done all summer.

The teenager scored in just the second minute as he ran on to a loose ball in his own half before racing forward and curling a fine effort in from 20 yards.

He caused the La Liga side all kinds of problems with his dribbling and trickery.

The 16-year-old left to a standing ovation midway through the second half.

“He is such an excellent prospect,” said ex-Reds defender Gary Gillespie on LFC TV.

“The difficult is managing expectations but it’s hard to put a lid on it.”

Slot said: “Rio is showing things every time in pre-season.”

Ngumoha’s performance in that game came on the back of an assist against AC Milan and goal against Yokohama F. Marinos in Asian friendlies.

He looks a fine talent, if raw, and will be hoping more first-team competitive games are on the way.

In January, Ngumoha became the youngest player to start a match for Liverpool – aged 16 years and 135 days old – in the 4-0 win over Accrington in the FA Cup.

But that was his only first-team appearance of the campaign and he did not make the bench for a Premier League game until the opening game of this season against Bournemouth.

After the tragic death of Diogo Jota and the sales of Darwin Nunez and Luis Diaz, Slot has a senior forward line of Salah, Hugo Ekitike and Cody Gakpo.

Now Ngumoha has made his breakthrough and Liverpool will hope his thrilling intervention at Newcastle is the start of something big.

This article is the latest from BBC Sport’s Ask Me Anything team.