The England international has been earning praise for his performances this season after having struggled for regular playing time under Antonio Conte last term.
Barkley signed for the Blues from Everton back in January but failed to make much of an impact during his first few months at Stamford Bridge.
However, the 24-year-old seems to be winning over new Blues boss Sarri and he has been in solid form whenever called upon this season.
Barkley has scored three goals and made three assists in 11 Premier League games for Chelsea FC so far this season.
The midfielder, however, was only a late substitute in Chelsea FC’s goalless draw with Everton at Stamford Bridge on Sunday afternoon.
Zola, who is Sarri’s assistant coach at Chelsea FC, has been very impressed by what he has seen of Barkley so far under the new Blues boss.
Zola is quoted as saying by Sky Sports: “He had a big injury that stopped him from playing at his best in the last few years. That’s something that has to be said.
“It’s been important for him the way we play because it’s making him a little bit more complete.
“We always knew he had ability – physical ability, technical ability. But to play the midfield position, he was lacking a little bit of tactical awareness and defensive awareness.
“He’s doing very well right now and it’s making him a better player. All these things, added to what he already had, is making him one of the best midfielders in the country.”
Chelsea FC will travel to Tottenham after the international break on 24 November.
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