Liverpool are set to bolster their backroom staff further with the appointment of a second goalkeeping coach.

John Achterberg has been in charge of keepers since 2001 but it's understood he is about to get an assistant in Jack Robinson, who currently works with England's under-15 to under-17 teams.

The standard of Liverpool's goalkeepers has been an area of concern in recent years, with Achterberg bearing the brunt of criticism when the likes of Simon Mignolet and Loris Karius made mistakes, until the €75m signing of Alisson Becker this summer.

Robinson, should his appointment be confirmed, previously spent seven years at Manchester United, as well as Crystal Palace and Leeds and was part of England Under-17s' World Cup win last year.

He be charged with developing youngsters Kamil Grabara and Caoimhin Kelleher, who have joined the first-team set-up at Melwood.

Off the field, Merseyside Police has confirmed it has exhausted its current lines of inquiry in relation to the attack on Manchester City's bus before last season's Champions League quarter-final at Anfield.

Despite reviewing hours of CCTV and mobile phone footage provided by members of the public, no individuals have been identified as being those who threw bottles and flares at the coach.

"Unfortunately there was no further footage from those on the coach and the other footage viewed by detectives was either clouded by smoke from flares thrown during the disorder, or didn't show the faces of those involved," said Assistant Chief Constable Ian Critchley.

"This was an act of serious disorder by people, who spoiled what should have been a celebratory event for genuine football goers.

"We are disappointed at this time that no one has been brought to justice and would re-appeal to anyone who was at the ground on April 4, who witnessed this appalling behaviour, and has information which could help us identify those involved, to contact us."