Alisson's mentor dissuaded parents from terminating his career

Alisson's path to becoming the world's costliest goalkeeper may never have come about had his parents not been persuaded he would slim down and grow enough to succeed, his former goalkeeping coach told The Sun on Tuesday.

The 25-year-old Brazilian number one -- who signed for Liverpool for a record 67million pounds ($88million, 75million euros) from Italian side AS Roma this month -- was too fond of biscuits and fizzy drinks and his parents preferred he stop football and return to his studies.

"One day his parents came looking for me, thinking he had no future in the profession and they wanted to get him out of football," his mentor Daniel Pavan told The Sun.

"They thought he had more future in his studies and that he should leave the club.

"But I managed to convince them Alisson was still going to grow to maturity for his age and would have a great future as a keeper." Pavan said he told the parents they should not be concerned about his relatively small height at the time because he would definitely grow and become a commanding presence in the penalty area -- he now stands at 6feet 4inches (1.93 metres).

"When Alisson started he had a slower maturation than the other boys, this made him a shorter keeper and one with weight above the others," said Pavan.

"This made him often deprived of a position in the starting line-up and sometimes even the bench.

"Genetically, he was slower than the boys of his age but with different technical gestures -- we bet on his growth from the first moment.

"And thank God they heard me. A year later he had grown 6.5in (16.51 centimetres)."