Aston Villa midfielder Patrik Berger has suffered a recurrence of his hamstring problem in training.
Berger has featuredjust once for Villa this season
The Czech international, 33, was initially injured in pre-season and has yet to start for Villa this campaign.
He made his comeback in the Carling Cup defeat to Leicester, but has now had a further setback and undergone a scan.
Villa manager Martin O'Neill did not confirm how long Berger would be out for, but he revealed the scans "have given us half decent news".