The Egyptian winger has never officially confirmed whether he had the procedure, but whatever he did it has worked wonders, as he has scored 12 goals in 18 appearances this term.
The Egyptian's contract is set to expire at the end of this season and he recently claimed that there are no new offers to stay on the table from the Merseyside chiefs.
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Amorim got his first taste of English football on Sunday away to Ipswich Town, where a new-look United in a 3-4-3 system were held to a 1-1 draw.
The Cityzens' recent woes have been influenced by a string of injuries to key men including long-term issues for Rodri and Oscar Bobb and more recent knocks to the likes of Mateo Kovacic.
Cooper took charge of just 15 games with the the Foxes, winning just three - and Lineker has named a surprise manager he'd like to see replace the axed Foxes boss.
KIERAN GILL: The teenaged attacker has been playing in higher age groups for Watford, including their Under-21s, for whom he has scored despite still only being 15.
LAWRENCE BOOTH IN CHRISTCHURCH: In a remarkable admission ahead of the first Test against New Zealand, Stokes admitted he had become too fixated on his return.
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The Foxes are expected to make progress in their search on Tuesday, with the players due to resume training after 48 hours off.
City were humbled at home as they lost 4-0 against Tottenham, with James Maddison netting a brace and Pedro Porro and Brennan Johnson also scoring in the rout.
Jamie Carragher heaped heavy praise on Mohamed Salah after the Egyptian scored twice in Liverpool 's 3-2 comeback win over Southampton on Sunday.
MIKE KEEGAN: When tickets for this match went on sale two months ago, Bodo's initial allocation of 3,800 sold out in 15 minutes, with 12,000 in the queue.
The Egyptian forward sent shockwaves through football on Monday when he revealed he was disappointed in the club for not putting a new contract on the table.
Alli last played competitively in February 2023 during a loan spell with the Turkish side Besiktas. He has been training with Everton since his contract at Goodison Park expired last summer.
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If anyone is to pull off the rare achievement at the Worlds, which start on December 15, it is Littler. The talent became the youngest ever player to hit one on television aged just 16 in January.
The 54-year-old spent eight years in charge of the national team before stepping down after leading his side to the Euro 2024 final in the summer.
Zambia and Orlando Pride striker Banda received the most votes from BBC Sport website readers after being included on a five-player shortlist.
SIR CLIVE WOODWARD: What I find totally unacceptable is when business leaders take home fat pay cheques at a time when the company they work for is underperforming.
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JAMES SHARPE: The echoes of 'IRONS! IRONS!' that filled the streets the night before still clung to the stone buildings by the time the road sweepers began their loop of the city.
Bellingham has opened up on the agony he felt after the Three Lions' defeat to Spain and said he felt like a scapegoat by fans and media, who he insists overstepped the mark of respect.
English football's governing body released their new equality, diversity and inclusion strategy for the next four years on Tuesday