Puel believes he lost his job at Leicester because he forced the players out of their comfort zone.
Speaking to L'Equipe, he said: “I put myself in difficulty knowingly. I took teams with a style of play that needed to evolve and I'm proud of what I achieved in these clubs.
“When we change, it hurts players who have been there for a long time. But it must be done, I have no regrets. I'm happy with the job done at Leicester .
"It was an ageing team that needed to be regenerated. Today it is the second youngest team in England with great players for the future."