Didier Deschamps has said he made a mistake in leaving Juventus in 2007 and would do things differently if given the opportunity again.
France coach Deschamps stepped in to help his former club after the departure of Fabio Capello and their enforced relegation as punishment for involvement in the Calciopoli refereeing scandal.
Juve overcame the imposition of a nine-point penalty to comfortably win the Serie B title and return to the top flight.
However, Deschamps resigned two games from the end of the campaign, believing he did not have the full backing of the club, and this week told Sky Italia: "It was a mistake to quit the Bianconeri, and if I could go back in time then I would not leave Juventus.
"I have made some mistakes, and I'm sure I'll make more in future - I hope as few as possible, but it's inevitable when you have to make decisions.
"Could I coach another club in Italy? I am not thinking about that right now, but it is possible. Why not? You never know."
The World Cup-winning midfielder also reflected on Juve's inability to win in Europe after his old club racked up yet another draw this week.
"They won the very important match with Napoli and, on paper, facing a weaker team [Nordsjaelland] just a few days later can take you to a drop in concentration," he said.
"It's tough for everyone, as yesterday Barcelona only won at the last minute and Manchester United had been losing 2-0."