At no stage did the 19-year-old look flustered and at no point did Carlos Tevez, Ryan Giggs or Nani threaten to get the better of him on a personal basis.
"It is important to remember this young man is 19," said Eriksson.
"I don't remember having a defender that strong and that quick at any age. That is a combination that is very rare indeed.
"He wins everything in the air and can fight with any centre-forward and then, if he makes a mistake, he has the speed to repair it.
"His pace is incredible. At 19, you just don't see that."