Serbian midfielder Marko Grujic has completed his move to Liverpool.
The 19-year-old has arrived at Anfield from Red Star Belgrade, where he will return for the remainder of the campaign on a loan deal.
"I'm very excited and so proud to be here and a member of Liverpool. I can't wait to get started, play at Anfield and train at Melwood," he told the club's official website.
"I was thinking about my progress in my next period and decided it was good for me to come here and try to be the best I can.
"I want to play in front of one of the loudest set of fans in Europe at Anfield. I like to play under pressure and that's why I've come here - because it brings out the best in me."
Grujic is Jurgen Klopp's first addition as manager of the Reds and the German added: "We're very pleased because Marko is a big talent and we've seen him a lot of times.
"When I came here, our scouts showed me some footage of a very skilled player from Red Star Belgrade. We watched it, we spoke to him [and] we met each other. He's a good boy, a young boy, but plays an important role at the moment at Red Star, who are the best team in Serbia."
The length of the youngster's contract has not been disclosed, although reports have claimed that it will run until the summer of 2021.