Portugal captain Ronaldo was seen having a word with the £60million-rated young Holland center-back following the 1-0 win.
A grinning Ronaldo, 34, then rubbed De Ligt’s hair and walked off to celebrate with his team-mates.
De Ligt, 19, is yet to decide on his next club with the likes of United, Liverpool, Barcelona and Paris Saint-Germain desperate for his signature.
Asked if he had questioned if he would be his team-mate at Juve, De Ligt told NOS: “That could be true, yes.
“I didn’t understand him at first. I was a little shocked, so I laughed, but I didn’t say anything.
“Shortly after the game you are not at all concerned with it, you are disappointed you have lost and that is the only thing you are thinking about.”
De Ligt managed to keep Old Trafford legend Ronaldo quiet throughout the game, with Goncalo Guedes scoring the only goal with a blistering 60th-minute shot to win the inaugural Nations League.
The defender has burst on to the scene after a stunning season with Ajax.
De Ligt helped steer the Dutch side into the Champions League semi-final, as well as the Eredivisie title.
Ajax’s skipper won the Golden Boy award for Europe’s best youngster last year.
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