The England international has blossomed into a key player at Stamford Bridge over the past couple of months following the Italian’s appointment in the summer.
Sarri’s predecessor Antonio Conte signed Barkley in a £15m deal from Everton in the January transfer window after the English playmaker failed to agree to a new deal at Goodison Park.
Barkley struggled with injuries in the initial months of his career at Stamford Bridge and made a mere four appearances under the former Juventus head coach.
Sarri, though, has clearly seen some potential in the 24-year-old following an encouraging start to the current Premier League campaign.
The January signing shed light on his burgeoning confidence following a man of the match performance in Chelsea FC’s 3-0 win at Southampton on Sunday afternoon.
“I feel like I have been at a high level for a couple of years, but it’s just about producing performances on game day,” Barkley told Chelsea FC’s website.
“Last season I had a difficult time with injuries, but on the training pitch I have felt strong and confident and I have built on that.
“As the season goes on I am sure I’ll continue to improve and show people what I am capable of.”
Barkley produced arguably his best performance since his move to Chelsea FC in Sunday’s 3-0 victory over Southampton at St Mary’s last weekend.
The Chelsea FC number eight teed up Eden Hazard in the 30th minute to break the deadlock on the south coast.
Barkley got on the score sheet to net his first Chelsea FC goal 25 minutes in the second half to cap a special performance before Alvaro Morata polished off a 3-0 win.
The England playmaker scored his first goal in 19 appearances in all competitions for the Old Trafford outfit since his move from Everton.
The Chelsea FC signing made an exciting start to his Premier League career after Roberto Martinez placed a lot of responsibility on Barkley’s shoulders.
His best return for a season came in 2013-14 when Barkley netted seven goals in 34 games in all competitions to earn rave reviews.
Barkley made his Premier League debut in a 1-0 loss to Queens Park Rangers in the opening game of the 2011-12 season.
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