Cape Town - The Bulls will be without the services of lock Grant Hattingh for this weekend's clash against the Jaguares in Argentina.
The news was revealed when the Bulls released their latest medical report on Monday.
"Grant has been complaining about a knee pain," team doctor Herman Rossouw said.
"Scans showed minimal problems there but he will consult a specialist tomorrow (Tuesday) to make a final decision on his progress. He is not in contention for this week's game against the Jaguares."
Hattingh's injury does not come at the best time for the Bulls, who are also without second-rower RG Snyman, who is recovering from an ankle ligament injury.
Snyman returned from duty for the SA 'A' said that hosted the England Saxons with the injury. He is still in a moon-boot and faces another four to five weeks out.
On the long-term injury list, Handre Pollard (knee) and Warwick Gelant (cruciate) are on track to return to action early next year.
Jan Serfontein faces another two months out after wrist surgery while Jacques Potgieter (two to three weeks) and Trevor Nyakane (four to five weeks) are the others on the injured list.