Northern Ireland U21 goalkeeper Liam Hughes arrived at Liverpool from Glasgow Celtic in January 2021.
Hughes made his senior league debut for Portadown at the age of 15, before joining Dungannon Swifts and then Celtic in February 2018.
He will be part of the Reds' U23s squad and enjoyed a memorable start to his Liverpool career at the end of February.
Having made his Premier League 2 debut for the U23s and kept a clean sheet during a 4-0 win over Arsenal, Hughes was named on the first-team bench for the 2-0 win at Sheffield United the next day.
U23s goalkeeping coach Mark Morris said: "I knew of him, I knew he fits the profile of what we're looking for in terms of a training 'keeper – and somebody who if we needed to play, could play.
"And I knew he was available, so everything luckily slotted into place. Liam was basically back in Northern Ireland waiting to go on trial at places and see what he could get.
"The personality we wanted to come in and train is a tricky one; they have to know the reason they're coming in and not be knocking on our door after two or three months saying, 'I'm not playing.'
"You're going to improve because of the calibre of the players you're training with. And the proof of the pudding is the lads that have come into that sort of position previously. There's four or five kids that have come into that slot, progressed and have gone on and now got professional careers."