The Spain international managed to tie down a regular starting spot in the Blues side during Antonio Conte’s second season in charge at Stamford Bridge.
Fabregas took a while to win over the former Juventus manager in Conte’s debut campaign at the west London club but the World Cup winner managed to force his way into the team.
Sarri signed Napoli playmaker Jorginho and Real Madrid’s Croatia international Mateo Kovavic in the 2018 summer transfer window to improve his options in the middle of the park.
Unsurprisingly, Fabregas has found his route to the Chelsea FC team congested given the influx of midfield talent under the Italian head coach.
The 31-year-old hasn’t made an appearance in the Premier League this season following Sarri’s appointment as the new Chelsea FC manager, although he has been struggling with a knee injury.
Former Chelsea FC winger Nevin explained why Fabregas could be a vital player for the Blues manager in the current Premier League season.
“There is one player who has been left out right now,” Nevin told Irish radio station Newstalk.
“If you talk about a passing team and they are a fantastic passing team, they’ve not got Fabregas in the team yet.
“What a difference he will make to the team. I am not sure Sarri knows all about him yet. When you have him up against a mass defence, Fabregas can play the killer pass.”
Fabregas has been limited to one start in the League Cup, while the former Arsenal captain featured for 25 minutes in a 1-0 win over Greek side PAOK in the Europa League.
Chelsea FC will take on Southampton in the Premier League on Sunday afternoon following their Europa League clash against Vidi FC at Stamford Bridge on Thursday night.
Given Sarri’s side are competing on four different fronts this season, Fabregas will surely have a role to play as the Italian manager looks to rotate his squad.
Fabregas brings a wealth of experience to the Chelsea FC side considering his two Premier League titles as well as successes in the FA Cup and the League Cup.
The World Cup winner started his career as a teenager at Arsenal and went on to become the Gunners captain before his move to boyhood club FC Barcelona in 2011.
However, Fabregas struggled to justify his £35m price tag at the Catalan side and returned to the Premier League with Chelsea FC in 2014 under Jose Mourinho.
The Spanish playmaker did win La Liga and Copa del Rey during his stint at FC Barcelona.
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