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However, a clause in the 25-year-old's contract relating to former club Real Sociedad could complicate matters further.

The Swedish striker made his intentions clear last month that he wished to explore opportunities away from St James' Park.

Newcastle delivered a pointed response, as the prospect of a deal with Liverpool hangs in the balance, though a sell-on clause written into his contract could further muddy the waters.

Isak's statement on Tuesday was scathing, and with the standoff becoming increasingly toxic, the star forward – who has been training separately from Newcastle's first team – claimed that the club had gone back on assurances made to him.

"I've kept quiet for a long time while others have spoken," wrote Isak.

It appears a British record transfer fee would be required to bring him to Anfield.

Complicating matters further is a sell-on clause included in Isak's deal when he switched to Newcastle from Real Sociedad in 2022.

Were he to move for $200M, for instance, Real Sociedad would pocket $11.6M.

This clause could prompt Newcastle to seek an even steeper fee for Isak, potentially forcing Liverpool to pay additional funds to ensure the Magpies receive a final figure they deem acceptable.

The club's statement reads: "We are clear in response that Alex remains under contract and that no commitment has ever been made by a club official that Alex can leave Newcastle United this summer.

As explained to Alex and his representatives, we must always take into consideration the best interests of Newcastle United, the team and our supporters in all decisions and we have been clear that the conditions of a sale this summer have not transpired.

"We do not foresee those conditions being met
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