Manchester City manager Mark Hughes is resigned to the fact that Martin Petrov is facing a long spell on the sidelines after suffering a knee ligament injury.
The winger sustained the problem in Bulgaria's goalless World Cup qualifying draw with Georgia on Wednesday and was substituted after 29 minutes.
Scans have since revealed long-term damage and Hughes, who recently announced he is confident Robinho will be fit for Monday's trip to Newcastle, fears the worst.
"Martin is going to see a couple more specialists over the weekend. But the view is, he has a significant injury and could be out for quite some time," said Hughes.
"He has ligament damage and the initial scans do not look good."
Petrov only recently returned from a hamstring strain, and Hughes fears the 29-year-old was rushed back from his previous problem.
"Martin had 10 minutes in one game and 20 minutes in another before going to play his country," added Hughes.
"It is a big ask for players and they are at risk on occasions if they have not had the required time on the pitch beforehand."