Aston Villa defender Luke Young is set to miss the next three matches with a torn hamstring.
Young missed last Saturday's goalless draw with Chelsea after suffering the setback in training the previous day.
But scans have revealed the injury is worse than first feared and Villa boss Gerard Houllier is resigned to being without the former England full-back for at least a fortnight.
The 31-year-old would therefore miss Saturday's clash at Sunderland, the Carling Cup tie with Burnley on Wednesday and the home derby with Birmingham on 31st October.
"The doctor has told me Luke will need at least another two weeks because it is a minor tear," Houllier confirmed.
"It's a blow because it's worse than we initially thought."
Gabriel Agbonlahor remains out of contention for the Sunderland trip after undergoing minor groin surgery, but fellow striker Emile Heskey, winger Marc Albrighton and defender Richard Dunne look like winning their battle to be fit.
Heskey (back) and Albrighton (sickness) were ruled out of the Chelsea clash, while centre-half Dunne had to be substituted with just 12 minutes gone after picking up an ankle problem.
"Richard has trained normally," Houllier added. "Marc returned to training on Monday, and Emile is much better. He trained normally.
"As for Gabby, I hope at some stage next week he will be able to train but he won't be involved this weekend."