Werder Bremen have opened talks to sign Marko Grujic from Liverpool on a deadline-day deal, Football Insider can exclusively reveal.

The German club have made a move for the central midfielder, 24, after he established himself as a Bundesliga star during the last two seasons on loan at Hertha Berlin.

A recruitment source has told Football Insider that Jurgen Klopp has given the green light for Grujic to leave Liverpool.

Both permanent and loan options are on the table for the Serbia international.

Bremen’s swoop for Grujic hinges on their own midfielder Davy Klaasen completing a move today back to Ajax.

The former Everton man’s likely exit would open up a space in their squad, as well as on their wage bill, for the giant Serb.

Subscribe to Football Insider TV now

He has failed to make the matchday squad for any of Liverpool’s four Premier League matches this season, including last night’s 7-2 humiliation at Aston Villa.

But he has been involved in both their League Cup matches, playing the full 90 minutes against Arsenal and Lincoln City.

Grujic become Klopp’s first signing for Liverpool back in January 2016 for £5.1million.

He has played for his parent club only 16 times but made 54 appearances for Hertha, where he was a regular scorer from midfield and hailed as one of their best-ever players.

Capped eight times by Serbia, Grujic has a contract at Liverpool that runs until the summer of 2023.

In other news, midfielder “has to get out” of Liverpool before the window closes tonight.