Exeter Chiefs have announced Jack Nowell was overlooked by England for the Six Nations because he requires an ankle operation.
A charge against Mark Sampson, relating to the use of racist language, has been dismissed.
Ahead of the start of their Six Nations campaign, England have named a 34-man squad which does not include Jack Nowell.
Faf du Plessis will not quit as captain before the fourth Test but it could be his last at home in the longest format.
England moved into a 2-1 series lead over South Africa and Joe Root saluted the contribution of their young players.
Keshav Maharaj belatedly delayed England with some big hitting, but South Africa were beaten by an innings and 53 runs at St George's Park.
Saracens have confirmed Billy Vunipola suffered a broken arm against Racing 92, seemingly ruling him out of England's Six Nations campaign.
South Africa have named an enlarged squad for the fourth and final Test against England in Johannesburg.
England are likely to be without Billy Vunipola for the Six Nations after he injured his arm in Saracens' win over Racing 92.
England took 10 wickets for 103 runs on day four of the third Test and Mark Boucher delivered a few home truths to the Proteas.