The 24-year-old limped out of Chelsea's 1-0 home defeat to Manchester City on Saturday with a hamstring problem and has joined Dani Carvajal and Andres Iniesta in withdrawing for the World Cup qualifiers.
Chelsea suffered a significant blow yesterday when the Spanish Football Federation reported that Álvaro Morata has suffered a grade-two hamstring injury that could rule him out for more than a month.
While the majority of the fixtures look winnable on paper for the Blues, their squad has been left with Michy Batshuayi as the only recognised striker.
Entire island evacuated as volcanoes rumble in Bali and Vanuatu
Agung, which dominates the landscape in the northeast of the island, last erupted in 1963, killing more than 1,100 people. According to Sutopo, volcanic activity of Mount Agung remains high although it is not predictable when it will erupt.
Morata, who has scored seven goals in his first 10 appearances for Chelsea, is also nearly certainly set to miss this month's doubleheader against Italian Serie A side Roma in the Champions League.
And he had taken that form onto the worldwide stage as he bagged for Spain for Spain against Italy at the beginning of September.
Conte admitted after the City game he took a massive risk playing Morata for the third time in seven days, but insisted he had no option but to play the frontman in such a big game.