Alexander-Arnold, who scored for England in last night's win over the USA, admits he sees the veteran as an inspiration.
He said: “I'd say James Milner is the most consistent player I've ever played or trained with - I've never seen him have a bad session or a bad game.
“He's so reliable and so versatile as well and that's everything you want in a player.
“He'll put his body on the line for the team and he's non-stop. When times are hard, he'll put in a tackle that lifts everyone and gets everyone up for the game. He brings the energy that the team needs.
“Off the pitch he holds the highest standards that I've probably ever seen in someone.
“He demands a lot from himself and seeing that on a daily basis is incredible.
“He'll never give up in training, he'll never stop running, and it gives you that motivation to do the same."