Grujic will link up with the Reds in the summer after signing for the club in January.
Grujic signed for the Reds in a £5.1 million deal in January but was loaned back to Red Star Belgrade for the remainder of the season to help them win the Serbian title.
The 19-year-old told Serbian website, Blic, as per the Liverpool Echo and the Anfield Index, that he got an unexpected phone call from the Liverpool boss that helped him make up his mind over moving to Merseyside.
He said: “His vision is that I should be something between a number 6 and a number 10. What they call a box-to-box midfielder. I would play both in the attack, and have responsibilities in the defence.
“My only request was that I didn’t want to be loaned out, I just want to play for Liverpool. He was very open, told me about how he sees my development."
It will be fascinating to see just how much game time Grujic gets next season, as Klopp doesn't seem too keen on letting his players leave the club on loan - as was shown in January as a series of players were recalled to the club, with some even getting a taste of first team action.
If he performs well when given the chance then he could feature quite heavily from next season onwards. It's certainly an area of the field where competition for places looks pretty fierce with fringe players like Cameron Brannagan and Kevin Stewart impressing recently, and there's the more established players in Emre Can, Jordan Henderson, Lucas Leiva, Joe Allen and James Milner who can all play a central role if required.