Liverpool bought midfielder Marko Grujic's Red Star Belgrade at worth 5.1 million pounds and offered a contract for 4 years.
But the brilliant Serb, 19-year-old continues to play on loan for club Red Star Belgrade temporarily and join Liverpool 1st July.
Grujic, who won the championship U-20 World Cup 2015, said, "I am so excited and proud to come here [Liverpool].
Grujic scored 5 goals in 22 appearances for top Serbian Red Star team this season.
He is the first player which Jurgen Klopp bought after becoming Liverpool manager since October last year.