Maurizio Sarri is frustrated with Willian after the Brazilian delayed his return to Chelsea’s pre-season training, according to reports.

The 29-year-old was due back to Chelsea’s training base last Friday following his holiday after Brazil’s World Cup campaign.

But Willian was unable to return on the date set by Sarri as he did not renew his passport in time.

According to The Times, Sarri had been counting on Willian returning in time to be fully ready for Chelsea’s first Premier League fixture of the season against Huddersfield on August 11.

But the Chelsea manager has been ‘left frustrated’ by the midfielder’s late arrival.

Chelsea’s squad are currently in Dublin ahead of their International Champions Cup clash against Arsenal on Wednesday evening, but Willian will play no part in the fixture.

Willian’s absence has also been exacerbated by other members of Chelsea’s squad cutting short their personal commitments to continue their pre-season preparations.

Alvaro Morata has already linked back up with his Chelsea teammates in Dublin after his wife Alice Campello gave birth to twins in Venice on Sunday.

Ruben Loftus-Cheek also cut short his holiday by a week after featuring for England at the World Cup and returned to training on Monday.

Willian is also set to miss Chelsea’s Community Shield tie against Manchester City at Wembley on Sunday.

The Brazilian has attracted interest from both Real Madrid and Barcelona this summer and Chelsea have rejected two offers for the midfielder.

Speaking earlier this week, Willian insisted that he wanted to remain at Stamford Bridge.

‘I am very happy at Chelsea and I am very happy living in London,’ he said.