Baiano knows both the Premier League and new Blues boss having spent three years at Derby before ending his career at small Tuscan non-league side Sangiovannese under Sarri.
He told the Mirror: “To me he is one if the best managers in Europe. He'll do well in the Premier League.
“Chelsea will have an offensive mentality with him. The Blues are among the best seven, eight clubs in the world and Sarri plays attacking football.
“He can adapt to any league. He already knows Premier League players, he studies everything and is knowledgeable about any player. I am sure he will settle in well."