Claude Makelele, a former Chelsea midfielder, is confident Maurizio Sarri can win the Premier League in his first season with the Blues.
But the Frenchman expects strong challenge from holders Manchester City and Manchester United.
Sarri, who took charge of the Stamford Bridge side after the sacking of compatriot Antonio Conte, has overseen a perfect start to the Premier League campaign.
So far, the Blues have defeated Huddersfield Town, Arsenal, Newcastle United and Bournemouth.
And based on their strong showing, Makelele is expecting big things from the Italian.
“I think Chelsea changed a lot,” he told newsmen. “Before now you have a lot of teams in the Premier League, it’s competitive.
“Manchester City, Manchester United, and also the smaller teams have good players. So it’s going to be difficult for them to win the Premier League. I’m confident.
“He [Sarri] still has good players, [Eden] Hazard is there, [N’Golo] Kante is there. These kinds of players give a different story about Chelsea than the way we knew Chelsea before.
“I think he has the capacity to make history for Chelsea again.”