Profile: Our new signing's journey to Anfield
Marko Grujic has become Jürgen Klopp's first signing as Liverpool manager after sealing a move from Red Star Belgrade today - find out more about his journey to Anfield below.
Grujic's football education began in the Red Star academy, where he spent eight years learning his craft before making a first-team debut against Vojvodina at the age of 17 in May 2013.
In 2014, he was sent out to Serbian First League side FK Kolubara on loan, and picked up four months' worth of valuable experience before returning to his parent club.
Back in Belgrade, the midfielder established himself as a first-team regular over the course of the 2014-15 season, as he and his teammates claimed a second place in the Serbian Superliga.
Watch a free video of Grujic's first day at Melwood below...
Grujic's progress was recognised with a place in his country's squad for the FIFA U20 World Cup last summer, and he played a key role in their eventual victory in the competition, making five appearances in the finals.
A change of manager at Red Star prior to the new season kicking off then saw the his importance grow domestically, with Miodrag Bozovi placing faith in the youngster by putting him in central midfield.
Despite his tender years, Grujic has evidenced an ability to control matches with his physical presence and dictate play during an incredible start to the 2015-16 campaign.
Red Star sit 25 points clear at the summit of the Serbian top-flight, with the Reds' latest signing having featured in 21 of 22 fixtures thus far.
He will now have the chance to help his hometown team claim the title as he spends the remainder of the season back there on loan.