Manchester United great Rio Ferdinand admits he's a big fan of Liverpool fullback Trent Alexander-Arnold.

Ferdinand, now a media pundit, believes Alexander-Arnold is setting new standards from full-back.

Speaking in an Instagram Q&A session, he said: “I saw him against Atletico Madrid at Anfield. From right-back, for 45 minutes in the first half, if any kid wants to see a player playing the modern game at right-back, get that 45-minute clip.

“The way he controlled that game from right-back… the last person I saw do that was maybe Cafu.

“He played every pass in the book – outside of the boot, crossfield fade, sprayed it far and wide, whipped it behind the Atletico defence who were scampering all over the gaff.

"He played it in around the corners, he did everything.

“Trent is an absolute mad footballer. I don't care what anyone else says, he plays for Liverpool, I don't care. The kid can play."