Arsenal and England winger Theo Walcott has been ruled out for seven to 10 days with a groin strain, Press Association Sport understands.
Walcott suffered the injury in training last night and will fly back to England, where he will be assessed by his club Arsenal.
It is anticipated the winger will be sidelined for between seven and 10 days.
It had been anticipated the 24-year-old would start Friday's encounter with San Marino.
Instead, he will miss both that game, and Tuesday's crucial trip to Montenegro.
In addition, he is a doubt for Arsenal's Premier League encounter with Reading at the Emirates Stadium on March 30.