Liverpool goalkeeper Alisson has been given the No 1 shirt for the 2019-20 campaign while Alex Oxlade-Chamberlain has taken the No 15 jersey from former Reds striker Daniel Sturridge.
The Brazilian shot-stopper wore No 13 during his debut season in English football last campaign following his £65million move from Roma.
But he will now don the No 1 jersey after replacing Loris Karius as Liverpool's first-choice goalkeeper.
Karius, who made two errors in Liverpool's Champions League final defeat by Real Madrid in 2018, is heading into his second year on loan at Turkish side Besiktas.
Alisson impressed in his first season at Anfield as Liverpool finished second in the top flight and lifted the Champions League trophy.
He kept 27 clean sheets and conceded 34 goals in 51 appearances for Jurgen Klopp's side.
Oxlade-Chamberlain will wear the No 15 shirt for the upcoming season after Sturridge's contract at the club ended on Monday morning.
The midfielder has been sporting the No 21 jersey since making the switch to the Reds from Arsenal back in 2017.
