Keshavarz was forced to leave the field due to his left foot injury.
“Keshavarz will have an MRI to determine the extent of the damage but he will be out for one month at least,” Iran futsal physiotherapist Meysam Shirzad said.
Iran’s Ghodrat Bahadori had missed the competition after suffering an injury in the country’s first match against Spain.
Iran will play in the third-place match against Portugal on Saturday.