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The signing of Federico Chiesa in August ensured this was the case in attack, joining a group that already included Diaz, Mohamed Salah, Cody Gakpo, Darwin Nunez and Diogo Jota.

This summer, following the heartbreaking loss of the Portuguese player, Liverpool has brought Hugo Ekitike into the fold, signing the Frenchman from Eintracht Frankfurt in an initial deal worth $92M.

If such players were to leave and Liverpool successfully signs Isak, the Reds would still have two natural center-forwards, with the versatility of players like Ekitike, Wirtz and Frimpong - along with Szoboszlai - ensuring they're not left wanting on the wings.

However, Ngumoha's pre-season performances, showcasing his dribbling skills and decision-making prowess alongside his goal contributions, have marked him as a viable natural option on the left flank following Diaz's exit.

After all, with Liverpool choosing not to field the Colombian in pre-season while his future was uncertain, it was the 16-year-old who was given starting opportunities in his stead.

Even when Gakpo was selected as Slot named a robust starting XI against Yokohama, it didn't prevent Ngumoha from making an impact when he came on in the second half.

He has certainly given his Dutch head coach food for thought

However, being under 21, he does not yet qualify as an underage player for the Reds in UEFA competition.

The youngster does count as an Under-21s player for Premier League purposes and therefore doesn't need to be registered in Liverpool's top-flight squad.

However, having only joined the Reds last summer, he hasn't been at the club long enough to earn similar status for the Champions League and secure a spot on 'List B' - comprised of eligible Under-21s players.

In contrast, highly-rated midfielder Trey Nyoni is now eligible for a spot on 'List B', having moved to Anfield from Leicester City two years ago.

As such, if Slot wants to include Ngumoha in European competition this season, he'll need to be named in Liverpool's maximum 25-man squad, taking up one of the four 'association-trained' homegrown slots.

However, this would mean that the Reds would have to limit their Premier League squad to no more than 24 players, unless they choose to exclude a senior player to accommodate Ngumoha in Europe.

Following Diaz's exit, Liverpool currently has 29 senior players over the age of 21, with 18 categorized as overseas players

It's permitted no more than 17 overseas senior players and can name a maximum 25-man squad.

Therefore, if it wants to make space for Ngumoha, at least five players over the age of 21 - including at least one additional overseas player - will need to depart before the transfer window shuts on September 1

Otherwise, the Reds will have to omit such players from their squads.

Granted, we can disregard a number of the current players, assuming they won't feature in Slot's first team plans, with Rhys Williams, James Balagizi, Fabian Mrozek and Calvin Ramsay - who now occupies an overseas slot - being the most likely candidates.

However, with more new faces anticipated at Anfield, and Liverpool's interest in players such as Isak and Crystal Palace captain Marc Guehi well-known as they assess their attacking and defensive options, further departures will also be necessary.

The rise of Ngumoha might convince the Reds that, aside from Isak, their attacking line-up is robust enough for the upcoming season - even factoring in potential exits.

Yet, there's still a flurry of transfer activity expected at Anfield in the coming weeks, both arrivals and departures, with accommodating Ngumoha another challenge club bosses will have to tackle.

* An AI tool was used to add an extra layer to the editing process for this story