Liverpool are confident Marko Grujic’s value will rocket to £40million by next year, Football Insider understands.

The central midfielder, 23, has established himself as a Bundesliga star during his two seasons out on loan at Hertha Berlin.

A Liverpool source has told Football Insider the club are closely monitoring Grujic and his development, led by loans manager Julian Ward.

Manager Jurgen Klopp is in no hurry to dispense with Grujic even though he thinks the Serbia international needs to smoothen the rough edges in his game before he is able to compete for a place in the starting XI of the Champions League holders.

Liverpool still have big hopes for the 6ft 3in powerhouse, and their recruitment team are convinced his value will soar from the £20million mark to £40million by the second half of this season.

Grujic is a key player for Hertha and has started all seven of their Bundesliga matches this season.

The goalscoring midfielder has chipped in with two goals, including one in the opening-day 2-2 draw against Bayern Munich.

He has spoken of returning to Liverpool after his mark at his parent club after offers were rejected for him from Premier League and Bundesliga clubs in the summer.

The midfielder has only featured 14 times for the Merseysiders since becoming Klopp’s first signing for the club back in January 2016 for a fee of £5.1million.

He was hailed last season by Hertha manager Pal Dardai, who has been at the club for over 20 years, as “by far the best midfielder I’ve seen in my time at the club.”

In other Liverpool news, it can be REVEALED that the club are to listen to January offers for midfielder after U-turn.