That is according to Sky Sports pundit and former Liverpool manager and midfielder Graeme Souness.
Alexander-Arnold has become a firm mixture under Jurgen Klopp this season.
The England international hit the headlines following Wednesday’s 5-0 win over Watford at Anfield.
Alexander-Arnold provided three assists for his team-mates, with Klopp later revealing the 20-year-old took home the match ball for his feat.
Souness says Alexander-Arnold has undoubted quality at crossing situations, which is evident from the faith shown by his team-mates.
But he admits there is still work to do on his defending.
“Yeah [he was missed against Manchester United] because they had the majority of the ball, they were on the front foot for the majority of the game,” Souness said.
“He’s got a wonderful delivery.
“He still has to learn the other side, which is the defending part at times. But he will get that for sure.
“He’s quality, someone at that age, if you go back a year, whenever Liverpool got a free kick people were stepping aside for a 19-year-old to come up and take it.
“It tells you of his qualities.”
Following the Watford win, Klopp described Alexander-Arnold’s assist achievement as “special”.
“You need to be really strong defensively and offensively,” Klopp said.
“The Watford game was exceptional.
“I don’t think I’ve ever been part of a game where someone had a hat-trick of assists. It was special.
“Trent got the match ball – he wanted it so he got it. It was really cool and let’s try to do something like that again.”