Ben Youngs has been ruled out of the final week of England's tour to South Africa with a shoulder injury.
The Leicester Tigers scrum-half scored two tries in the second Test defeat by the Springboks on Saturday but left the field in the closing stages of the game.
The Leicester Tigers scrum-half scored two tries in the second Test defeat by the Springboks on Saturday but left the field in the closing stages of the game.
Karl Dickson of Harlequins is flying out to join the England squad and will arrive in Johannesburg on Monday morning to prepare for Tuesday's match against the Northern Barbarians in Potchefstroom.
The squad will return home following the third Test next Saturday.