Manu Tuilagi looks on during the England training session held at Browns Sport Club.
Image credit: Eurosport
The 27-year-old Leicester centre picked up the injury in training and will be replaced by Sale wing Chris Ashton on the bench for the opening November test at Twickenham.
Tuilagi, who last played for England in 2016, has endured a wretched four-year run of injuries.
"Manu's disappointed. He desperately wanted to play for England again," scrum coach Neal Hatley said.
Stage 15, Tolmezzo - Sappada (176km)