The Reds’ full list for the new term won’t be confirmed until later in the summer, but Kobbie Mainoo, Matej Kovar, Alvaro Fernandez and Dan Gore will all be wearing different shirts going forward.
Mainoo made his senior debut against Charlton Athletic in January wearing no.73, with the homegrown midfielder going on to win the prestigious Jimmy Murphy Young Player of the Year award.
The 18-year-old has been given the no.37 shirt, previously occupied by recent Under-21 European Championship winner James Garner, ahead of the new campaign.
Goalkeeper Kovar won the league while on loan at Sparta Prague last season and the Czech youth international moves from no.