Barcelona academy director Patrick Kluivert believes Matthijs de Ligt regrets his decision to join Juventus.
Juve beat out strong competition to sign Netherlands international De Ligt from Ajax in June.
The defender had been heavily linked to LaLiga champions Barca but opted to sign a five-year deal in Turin after Ajax accepted an offer worth an initial €75million.
De Ligt was thrust into the starting XI after Giorgio Chiellini suffered a serious knee injury and has faced criticism for conceding two penalties – both for handball – in his nine Serie A appearances.
Former Netherlands striker Kluivert believes the 20-year-old may now be second-guessing his transfer choice.
"I would not say I tried to convince him, I could only tell him very good things about both Barcelona the city, as well as the club," Kluivert told Mundo Deportivo when asked about talks he held with De Ligt.
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"But in the end it is the player and his agent who decide. Of course De Ligt is a great defender, but in the end he made a choice. I think he is a little sorry, but it is what it is.
"In life you make choices and sometimes you do it well and sometimes badly. You have to learn from your decisions."
Frenkie de Jong, De Ligt's former Ajax team-mate, did make the move to Barca in the close season and has flourished, with Kluivert praising the "very high quality" midfielder.
Netherlands boss Ronald Koeman coaches both players at international level and has called the Barca job a "possibility" beyond Euro 2020, after which a clause in his contract would allow him to leave for Camp Nou.
When asked whether Koeman could return to the club as head coach, Kluivert told SPORT: "I don't know, maybe, but I insist, out of respect for Valverde, I don't want to talk about other coaches when there's one in a job at this club."
He added: "I know Ronald very well. Out of respect for Valverde, I don't want to position myself.
"[Koeman] is a very good coach, he's doing really well with the Dutch national team."