Juergen Klopp made his first signing as Liverpool manager on Wednesday, bringing in teenage Serbian midfielder Marko Grujic from Red Star Belgrade.
The 19-year-old signed a four-and-a-half-year deal, reportedly worth around 5 million pounds (5.4 million dollars).
Grujic will be loaned back to Red Star Belgrade for the rest of the season, joining Liverpool in the summer.
"We're very pleased because Marko is a big talent and we've seen him a lot of times," Klopp told Liverpool's official website.
"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, 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.
"To describe him, I would say he’s a tall boy, but quick and good at technical things. He can play passes and can dribble. But he is young, so he has to develop. He will do this, so everything is okay."