The Ajax captain, 19, has been linked with a £75million summer move to Europe’s top clubs, including Barcelona and Paris Saint-Germain.
He has starred throughout Ajax’s unexpected charge to the Champions League semi-finals and is expected to leave the Dutch champions at the end of the season.
De Boer, assistant manager of Ajax A1, insists De Ligt could ‘easily’ play in the Premier League.
He told talkSPORT: “For me, a 19-year-old boy, captain of Ajax, he’s the guy who is next to [Virgil] van Dijk in the [Dutch] national team.
“He’s so strong, determined to be a winner, unbelievable. You can see it in front of the camera, his interviews, I’ve never seen it from a 19-year-old boy.
“For me, he can play in every team, if he goes to a defending or attacking team. He’s so good.
“He can easily come to the Premier League – he can choose any team in the world.”
De Ligt’s Ajax and Netherlands team-mate Frenkie de Jong will officially complete a £65million move to Barcelona on July 1.
But De Boer believes De Ligt is currently better than De Jong and will adapt to a higher level of football much more easily.
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He added: “Frenkie de Jong went for €75million and that can go up to €85million at Barcelona.
“But in my opinion, De Ligt is further in his qualities and is more ready to make that step than Frenkie de Jong.