Former Liverpool goalkeeper coach John Achterberg worked with Alisson from the moment he signed in a £66.8m deal from Roma in 2018 — then a world record fee for a goalkeeper.
Alisson went on to keep 21 clean sheets in his first season in the Premier League and won the Golden Glove.
Here Achterberg, now coaching at Al Ettifaq, tells Mail Sport’s Simon Jones why Alisson is the best in the world.
1. Handling
His handling is really good. People would be astonished how much he catches the ball in training.