'I saw Alexander Isak accept Arne Slot demand before first exciting Liverpool glimpse'

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For Liverpool to come to the conclusion that committing as much as $169 million (£125 million) on Alexander Isak was the right call, the numbers had to add up.

Only Mohamed Salah netted more than Isak did in the Premier League last season.

"The main challenge he has is to become so fit that he is first of all ready to do what he did last season," the Liverpool head coach said on Tuesday ahead of the game.

Alexander Isak and Arne Slot after Liverpool 3-2 Atletico Madrid.

"The moment Isak is fit and match-fit and can play 90, the next step is playing three times in a week 90 minutes, and then the next step is going one step further in terms of pressing," Slot said.

Like with Florian Wirtz, there is much more to come