Alexander Isak sent 'huge' Liverpool warning before potential Champions League debut

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Liverpool striker Alexander Isak has been warned that he will have to "reinvent" himself following his British record transfer to Anfield because opposition teams will be set up to stop him.

After going on strike, Isak forced through a $169 million (£125 million) switch from Newcastle this summer, with Liverpool confirming his arrival on transfer deadline day.

Since then, Isak has been getting himself up to speed — and he could play as much as 45 minutes against Atletico Madrid later today in the Champions League.

But the former Chelsea winger Florent Malouda says that Isak is about to face a different challenge after moving to Liverpool.

I think for him it's more like going from Newcastle to Liverpool, a team that is used to Champions League football.

"Now you have to play in the Premier League at your best, and three days later you need to play in the Champions League, and then you need to play with your national team.

So you have to reinvent and adapt yourself."

Isak has only previously played six games in the Champions League (five for Newcastle and one for Borussia Dortmund as a teenager)

"There is definitely a chance because he's in the squad and the chance to play, I would usually say 99.9 percent sure, but I can say 100 percent sure, he will not play 90 minutes, but he's part of the squad," Arne Slot said on Tuesday.

"It's already a Champions League game to look forward to, but if people look forward to his playing time that could mean that could happen tomorrow as well

The only thing we're sure of is he will not play 90."

Liverpool.com says: European nights at Anfield do not need any extra hype, but Isak potentially being involved will definitely help the atmosphere a touch