Gareth Southgate has left the Liverpool right-back out of his squad for the Nations League game at Wembley after keeping him on the bench against Italy last week.
It means 22-year-old Alexander-Arnold will have played just one of England’s last eight games when Southgate pick their squad for Qatar in just over a month.
Former Liverpool player and manager Souness believes Alexander-Arnold has a lot to offer the Three Lions, particularly as an impact substitute.
“For tournament football, you have to start a game thinking you’re going to play the best of the team you’re playing against,” he told talkSPORT.
“In that sense, you could start with a better defender, but you have to involve Trent in your World Cup squad.
“A simple way of saying it is if you’re chasing a game, he’s your man. If you get to the last 10 or 15 minutes and you hang on to something, I don’t think you’ll feature Trent in that situation. .
“Certainly when you’re looking for a goal, he’s your man. He has the most incredible qualities when you come into that final third.