The 22-year-old joined the Blues in 2007 from Lens but failed to make an impact in west London, and has had loan stints with Fulham, Bolton and Dijon before his most recent move to the Dutch outfit.
Kakuta made 12 substitute appearances for Vitesse this season before being recalled by Chelsea in early January, and scout Guy Hillion is puzzled over the winger's status.
"Frankly, I don't know why he put an end to his stay with the Dutch club," Hillion told L'Equipe. "It is a huge waste. I already said it and I repeat it, he is the most gifted player of his generation. He could have been exceptional.
"But talent is not enough. When you pile on failures and there is trouble in any club where you played, you have to ask the right questions and question yourself.
"There was Bolton, Fulham and Dijon too. You can't manage everything in a player's career. You can't manage what is on his mind, his entourage or his family."
Chelsea goalkeeping coach Christophe Lollichon thinks that a move to his native France would benefit the youngster, who has played just 16 times for his parent club.
"I feel, but it is only my opinion, that he has a big desire to go back to France. He needs a club that trusts him, he needs stability. I don't think he is lost to football, I think he is very late."