The 20-year-old midfielder will bring something very important to Anfield.
The 20-year-old midfielder officially joined the Reds in January, but spent the remainder of the campaign on loan with former club Red Star Belgrade.
But the Serbian leaves Red Star on the back of helping the club to two trophies - and Liverpool fans should be excited
Grujic took to Instagram recently to share a photo of himself flanked by two trophies - including the Serbian Super Liga.
Liverpool have lost two finals under Jurgen Klopp already; most recently when the Premier League giants lost 3-1 to Sevilla in the Europa League final, having surrendered a 1-0 half-time lead.
Having also missed out on the Capital One Cup against a rather poor Manchester City side, it could be argued that Klopp does not boast the players rich with trophy-winning experience, but Grujic, who joined for around £5 million (Sky Sports), could help change that.
Sevilla and City did not play particularly well in their respective finals against Liverpool, but they have the personnel who have plenty of winners medals in their collection and it makes a difference.
Grujic alone is unlikely to help Liverpool in the search for major honours, but having also won the Under-20 World Cup, this is a player who is racking up a lot of vital experience despite his tender years and such a figure will do no harm whatsoever.