Alexander Isak expressed his gratitude to Newcastle United and the club's supporters on Tuesday after his British-record transfer to Liverpool, despite a trail of criticism and a frosty farewell from St James' Park.

Newcastle fans were left with a bitter taste on Monday as the English champions secured the 25-year-old for 125 million pounds ($168.86 million) after the Sweden striker's standoff with the club ended with burned bridges and frayed loyalties.

"I want to express my gratitude to my teammates, the staff, and above all, the city of Newcastle and all the amazing supporters for the three unforgettable years we shared together," Isak wrote on Instagram with comments on the post turned off.

"Together, we have written history and brought the club to the place where it truly belongs.

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