He told Liverpool's YouTube channel: "I would say Brandon Barker, played for City.
"Because I'd never seen someone move so quickly and sharp and effectively, so I'd say Brandon Barker.".
BRANDON BARKER once "destroyed" Trent Alexander-Arnold - now he is left without a club.
Barker came through City's youth -even winning their Academy Players' Player of the Year during the 2013/14 season.
Barker then moved to Rangers, had another loan to Oxford, joined Reading, then Omonia in Cyrpus and most recently Morecambe.