"Whoever comes up against him, whatever test he is set, he just blows them away.
"It is hard to remember he is only 19. At the moment I would say he is as good a centre-half as England have."
The Republic of Ireland international continued: "In the last couple of years, he got his experience as a right-back.
"Now he is playing centre-half, which is his favourite position.
"In the last three games he has shown he has pace and power and everything else that you need.
"Nobody can run past him or beat him in the air. He has just been outstanding."