Springbok wing JP Pietersen is battling to overcome a mild groin strain ahead of Saturday's Test against England at Twickenham.
Pietersen picked up the injury in last weekend's 21-10 win over Scotland at Murrayfield and is the only major injury concern this week.
A final decision on his fitness will only be made later in the week.
"JP has a mild groin strain and will not train on Monday, but we will see how he progresses this week before we make a final call on his availability to face England later in the week," said Springbok team doctor, Craig Roberts.
"Apart from JP, we have the usual number of bumps and bruises from the Test and we'll manage each player individually.
"We were very happy with the way Jannie (du Plessis) came through after we managed his ankle last week. Jean also played a full 80 minutes after he had been in bed with flu for a few days last week."